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38 files changed, 2663 insertions, 1276 deletions

diff --git a/vendor/CHANGELOG.md b/vendor/CHANGELOG.md
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+++ b/vendor/CHANGELOG.md
@@ -0,0 +1,2311 @@
+ChangeLog
+=========
+
+3.2.0-beta1 (2016-05-20)
+------------------------
+
+* #833: Calendars throw exceptions when the sharing plugin is not enabled.
+* #834: Return vCards exactly as they were stored if we don't need to convert
+  in between versions.
+
+
+3.2.0-alpha1 (2016-05-09)
+-------------------------
+
+* Database changes for CalDAV. If you are using the CalDAV PDO backends, you
+  must migrate. Run `./bin/migrateto32.php` for more info.
+* Support for WebDAV Resource Sharing, an upcoming standard.
+* Added support for sharing in the CalDAV PDO backend! Users can now invite
+  others to their calendar and give them read/read-write access!
+* #397: Support for PSR-3. You can now log exceptions with your favourite
+  psr3-compatible logging tool.
+* #825: Actual proper, tested support for PostgreSQL. We require version 9.5.
+* Removed database migration script for sabre/dav 1.7. To update from that
+  version you now first need to update to sabre/dav 3.1.
+* Removed deprecated function: `Sabre\DAV\Auth\Plugin::getCurrentUser()`.
+* #774: Fixes for getting free disk space on Windows.
+* #803: Major changes in the sharing API. If you were using an old sabre/dav
+  sharing api, head to the website for more detailed migration notes.
+* #657: Support for optional auth using `{DAV:}unauthorized` and `{DAV:}all`
+  privileges. This allows you to assign a privilege to a resource, allowing
+  non-authenticated users to access it. For instance, this could allow you
+  to create a public read-only collection.
+* #812 #814: ICS/VCF exporter now includes a more useful filename in its
+  `Content-Disposition` header. (@Xenopathic).
+* #801: BC break: If you were using the `Href` object before, it's behavior
+  now changed a bit, and `LocalHref` was added to replace the old, default
+  behavior of `Href`. See the migration doc for more info.
+* Removed `Sabre\DAVACL\Plugin::$allowAccessToNodesWithoutACL` setting.
+  Instead, you can provide a set of default ACL rules with
+  `Sabre\DAVACL\Plugin::setDefaultAcl()`.
+* Introduced `Sabre\DAVACL\ACLTrait` which contains a default implementation
+  of `Sabre\DAV\IACL` with some sane defaults. We're using this trait all over
+  the place now, reducing the amount of boilerplate.
+* Plugins can now control the "Supported Privilege Set".
+* Added Sharing, ICSExport and VCFExport plugins to `groupwareserver.php`
+  example.
+* The `{DAV:}all` privilege is now no longer abstract, so it can be assigned
+  directly. We're using the `{DAV:}all` privilege now in a lot of cases where
+  we before assigned both `{DAV:}read` and `{DAV:}write`.
+* Resources that are not collections no longer support the `{DAV:}bind` and
+  `{DAV:}unbind` privileges.
+* Corrected the CalDAV-scheduling related privileges.
+* Doing an `UNLOCK` no longer requires the `{DAV:}write-content` privilege.
+* Added a new `getPrincipalByUri` plugin event. Allowing plugins to request
+  quickly where a principal lives on a server.
+* Renamed `phpunit.xml` to `phpunit.xml.dist` to make local modifications easy.
+* Functionality from `IShareableCalendar` is merged into `ISharedCalendar`.
+* #751: Fixed XML responses from failing `MKCOL` requests.
+* #600: Support for `principal-match` ACL `REPORT`.
+* #599: Support for `acl-principal-prop-set` ACL `REPORT`.
+* #798: Added an index on `firstoccurence` field in MySQL CalDAV backend. This
+  should speed up common calendar-query requests.
+* #759: DAV\Client is now able to actually correctly resolve relative urls.
+* #671: We are no longer checking the `read-free-busy` privilege on individual
+  calendars during freebusy operations in the scheduling plugin. Instead, we
+  check the `schedule-query-freebusy` privilege on the target users' inbox,
+  which validates access for the entire account, per the spec.
+* The zip release ships with [sabre/vobject 4.1.0][vobj],
+  [sabre/http 4.2.1][http], [sabre/event 3.0.0][evnt],
+  [sabre/uri 1.1.0][uri] and [sabre/xml 1.4.1][xml].
+
+
+3.1.3 (2016-04-06)
+------------------
+
+* Set minimum libxml version to 2.7.0 in `composer.json`.
+* #805: It wasn't possible to create calendars that hold events, journals and
+  todos using MySQL, because the `components` column was 1 byte too small.
+* The zip release ships with [sabre/vobject 4.1.0][vobj],
+  [sabre/http 4.2.1][http], [sabre/event 3.0.0][evnt],
+  [sabre/uri 1.1.0][uri] and [sabre/xml 1.4.1][xml].
+
+
+3.1.2 (2016-03-12)
+------------------
+
+* #784: Sync logs for address books were not correctly cleaned up after
+  deleting them.
+* #787: Cannot use non-seekable stream-wrappers with range requests.
+* Faster XML parsing and generating due to sabre/xml update.
+* #793: The Sqlite schema is now more strict and more similar to the MySQL
+  schema. This solves a problem within Baikal.
+* The zip release ships with [sabre/vobject 4.0.3][vobj],
+  [sabre/http 4.2.1][http], [sabre/event 3.0.0][evnt],
+  [sabre/uri 1.1.0][uri] and [sabre/xml 1.4.1][xml].
+
+
+3.1.1 (2016-01-25)
+------------------
+
+* #755: The brower plugin and some operations would break when scheduling and
+  delegation would both be enabled.
+* #757: A bunch of unittest improvements (@jakobsack).
+* The zip release ships with [sabre/vobject 4.0.2][vobj],
+  [sabre/http 4.2.1][http], [sabre/event 3.0.0][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.3.0][xml].
+
+
+3.1.0 (2016-01-06)
+------------------
+
+* Better error message when the browser plugin is not enabled.
+* Added a super minimal server example.
+* #730: Switched all mysql tables to `utf8mb4` character set, allowing you to
+  use emoji in some tables where you couldn't before.
+* #710: Provide an Auth backend that acts as a helper for people implementing
+  OAuth2 Bearer token. (@fkooman).
+* #729: Not all calls to `Sabre\DAV\Tree::getChildren()` were properly cached.
+* #727: Added another workaround to make CalDAV work for Windows 10 clients.
+* #742: Fixes to make sure that vobject 4 is correctly supported.
+* #726: Better error reporting in `Client::propPatch`. We're now throwing
+  exceptions.
+* #608: When a HTTP error is triggered during `Client:propFind`, we're now
+  throwing `Sabre\HTTP\ClientHttpException` instead of `Sabre\DAV\Exception`.
+  This new exception contains a LOT more information about the problem.
+* #721: Events are now handled in the correct order for `COPY` requests.
+  Before this subtle bugs could appear that could cause data-loss.
+* #747: Now throwing exceptions and setting the HTTP status to 500 in subtle
+  cases where no other plugin set a correct HTTP status.
+* #686: Corrected PDO principal backend's findByURI for email addresses that
+  don't match the exact capitalization.
+* #512: The client now has it's own `User-Agent`.
+* #720: Some browser improvements.
+* The zip release ships with [sabre/vobject 4.0.1][vobj],
+  [sabre/http 4.2.1][http], [sabre/event 3.0.0][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.3.0][xml].
+
+
+3.1.0-alpha2 (2015-09-05)
+-------------------------
+
+* Massive calendars and addressbooks should see a big drop in peak memory
+  usage.
+* Fixed a privilege bug in the availability system.
+* #697: Added a "tableName" member to the PropertyStorage PDO backend. (@Frzk).
+* #699: PostgreSQL fix for the Locks PDO backend. (@TCKnet)
+* Removed the `simplefsserver.php` example file. It's not simple enough.
+* #703: PropPatch in client is not correctly encoded.
+* #709: Throw exception when running into empty
+  `supported-calendar-component-set`.
+* #711: Don't trigger deserializers for empty elements in `{DAV:}prop`. This
+  fixes issues when using sabre/dav as a client.
+* The zip release ships with [sabre/vobject 4.0.0-alpha2][vobj],
+  [sabre/http 4.1.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.2.0][xml].
+
+
+3.1.0-alpha1 (2015-07-19)
+-------------------------
+
+* Now requires PHP 5.5
+* Upgraded to vobject 4, which is a lot faster.
+* Support for PHP 7.
+* #690: Support for `calendar-availability`, draft 05.
+  [reference][calendar-availability].
+* #691: Workaround for broken Windows Phone client.
+* The zip release ships with [sabre/vobject 4.0.0-alpha1][vobj],
+  [sabre/http 4.0.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.1.0][xml].
+
+
+3.0.9 (2016-04-06)
+------------------
+
+* Set minimum libxml version to 2.7.0 in `composer.json`.
+* #727: Added another workaround to make CalDAV work for Windows 10 clients.
+* #805: It wasn't possible to create calendars that hold events, journals and
+  todos using MySQL, because the `components` column was 1 byte too small.
+* The zip release ships with [sabre/vobject 3.5.1][vobj],
+  [sabre/http 4.2.1][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.1.0][uri] and [sabre/xml 1.4.1][xml].
+
+
+3.0.8 (2016-03-12)
+------------------
+
+* #784: Sync logs for address books were not correctly cleaned up after
+  deleting them.
+* #787: Cannot use non-seekable stream-wrappers with range requests.
+* Faster XML parsing and generating due to sabre/xml update.
+* The zip release ships with [sabre/vobject 3.5.0][vobj],
+  [sabre/http 4.2.1][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.1.0][uri] and [sabre/xml 1.4.1][xml].
+
+
+3.0.7 (2016-01-12)
+------------------
+
+* #752: PHP 7 support for 3.0 branch. (@DeepDiver1975)
+* The zip release ships with [sabre/vobject 3.5.0][vobj],
+  [sabre/http 4.2.1][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.3.0][xml].
+
+
+3.0.6 (2016-01-04)
+------------------
+
+* #730: Switched all mysql tables to `utf8mb4` character set, allowing you to
+  use emoji in some tables where you couldn't before.
+* #729: Not all calls to `Sabre\DAV\Tree::getChildren()` were properly cached.
+* #734: Return `418 I'm a Teapot` when generating a multistatus response that
+  has resources with no returned properties.
+* #740: Bugs in `migrate20.php` script.
+* The zip release ships with [sabre/vobject 3.4.8][vobj],
+  [sabre/http 4.1.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.3.0][xml].
+
+
+3.0.5 (2015-09-15)
+------------------
+
+* #704: Fixed broken uri encoding in multistatus responses. This affected
+  at least CyberDuck, but probably also others.
+* The zip release ships with [sabre/vobject 3.4.7][vobj],
+* The zip release ships with [sabre/vobject 3.4.7][vobj],
+  [sabre/http 4.1.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.2.0][xml].
+
+
+3.0.4 (2015-09-06)
+------------------
+
+* #703: PropPatch in client is not correctly encoded.
+* #709: Throw exception when running into empty
+  `supported-calendar-component-set`.
+* #711: Don't trigger deserializers for empty elements in `{DAV:}prop`. This
+  fixes issues when using sabre/dav as a client.
+* #705: A `MOVE` request that gets prevented from deleting the source resource
+  will still remove the target resource. Now all events are triggered before
+  any destructive operations.
+* The zip release ships with [sabre/vobject 3.4.7][vobj],
+  [sabre/http 4.1.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.2.0][xml].
+
+
+3.0.3 (2015-08-06)
+------------------
+
+* #700: Digest Auth fails on `HEAD` requests.
+* Fixed example files to no longer use now-deprecated realm argument.
+* The zip release ships with [sabre/vobject 3.4.6][vobj],
+  [sabre/http 4.0.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.1.0][xml].
+
+
+3.0.2 (2015-07-21)
+------------------
+
+* #657: Migration script would break when coming a cross an iCalendar object
+  with no UID.
+* #691: Workaround for broken Windows Phone client.
+* Fixed a whole bunch of incorrect php docblocks.
+* The zip release ships with [sabre/vobject 3.4.5][vobj],
+  [sabre/http 4.0.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.1.0][xml].
+
+
+3.0.1 (2015-07-02)
+------------------
+
+* #674: Postgres sql file fixes. (@davesouthey)
+* #677: Resources with the name '0' would not get retrieved when using
+  `Depth: infinity` in a `PROPFIND` request.
+* #680: Fix 'autoprefixing' of dead `{DAV:}href` properties.
+* #675: NTLM support in DAV\Client. (@k42b3)
+* The zip release ships with [sabre/vobject 3.4.5][vobj],
+  [sabre/http 4.0.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.1.0][xml].
+
+
+3.0.0 (2015-06-02)
+------------------
+
+* No changes since last beta.
+* The zip release ships with [sabre/vobject 3.4.5][vobj],
+  [sabre/http 4.0.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.0.0][xml].
+
+
+3.0.0-beta3 (2015-05-29)
+------------------------
+
+* Fixed deserializing href properties with no value.
+* Fixed deserializing `{DAV:}propstat` without a `{DAV:}prop`.
+* #668: More information about vcf-export-plugin in browser plugin.
+* #669: Add export button to browser plugin for address books. (@mgee)
+* #670: multiget report hrefs were not decoded.
+* The zip release ships with [sabre/vobject 3.4.4][vobj],
+  [sabre/http 4.0.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.0.0][xml].
+
+
+3.0.0-beta2 (2015-05-27)
+------------------------
+
+* A node's properties should not overwrite properties that were already set.
+* Some uris were not correctly encoded in notifications.
+* The zip release ships with [sabre/vobject 3.4.4][vobj],
+  [sabre/http 4.0.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.0.0][xml].
+
+
+3.0.0-beta1 (2015-05-25)
+------------------------
+
+* `migrate22.php` is now called `migrate30.php`.
+* Using php-cs-fixer for automated coding standards enforcement and fixing.
+* #660: principals could break html output.
+* #662: Fixed several bugs in the `share` request parser.
+* #665: Fix a bug in serialization of complex properties in the proppatch
+  request in the client.
+* #666: expand-property report did not correctly prepend the base uri when
+  generating uris, this caused delegation to break.
+* #659: Don't throw errors when when etag-related checks are done on
+  collections.
+* Fully supporting the updated `Prefer` header syntax, as defined in
+  [rfc7240][rfc7240].
+* The zip release ships with [sabre/vobject 3.4.3][vobj],
+  [sabre/http 4.0.0][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 1.0.0][xml].
+
+
+3.0.0-alpha1 (2015-05-19)
+-------------------------
+
+* It's now possible to get all property information from files using the
+  browser plugin.
+* Browser plugin will now show a 'calendar export' button when the
+  ics-export plugin is enabled.
+* Some nodes that by default showed the current time as their last
+  modification time, now no longer has a last modification time.
+* CardDAV namespace was missing from default namespaceMap.
+* #646: Properties can now control their own HTML output in the browser plugin.
+* #646: Nicer HTML output for the `{DAV:}acl` property.
+* Browser plugin no longer shows a few properties that take up a lot of space,
+  but are likely not really interesting for most users.
+* #654: Added a collection, `Sabre\DAVACL\FS\HomeCollection` for automatically
+  creating a private home collection per-user.
+* Changed all MySQL columns from `VARCHAR` to `VARBINARY` where possible.
+* Improved older migration scripts a bit to allow easier testing.
+* The zip release ships with [sabre/vobject 3.4.3][vobj],
+  [sabre/http 4.0.0-alpha3][http], [sabre/event 2.0.2][evnt],
+  [sabre/uri 1.0.1][uri] and [sabre/xml 0.4.3][xml].
+
+
+2.2.0-alpha4 (2015-04-13)
+-------------------------
+
+* Complete rewrite of the XML system. We now use our own [sabre/xml][xml],
+  which has a much smarter XML Reader and Writer.
+* BC Break: It's no longer possible to instantiate the Locks plugin without
+  a locks backend. I'm not sure why this ever made sense.
+* Simplified the Locking system and fixed a bug related to if tokens checking
+  locks unrelated to the current request.
+* `FSExt` Directory and File no longer do custom property storage. This
+  functionality is already covered pretty well by the `PropertyStorage` plugin,
+  so please switch.
+* Renamed `Sabre\CardDAV\UserAddressBooks` to `Sabre\CardDAV\AddressBookHome`
+  to be more consistent with `CalendarHome` as well as the CardDAV
+  specification.
+* `Sabre\DAV\IExtendedCollection` now receives a `Sabre\DAV\MkCol` object as
+  its second argument, and no longer receives seperate properties and
+  resourcetype arguments.
+* `MKCOL` now integrates better with propertystorage plugins.
+* #623: Remove need of temporary files when working with Range requests.
+  (@dratini0)
+* The zip release ships with [sabre/vobject 3.4.2][vobj],
+  [sabre/http 4.0.0-alpha1][http], [sabre/event 2.0.1][evnt],
+  [sabre/uri 1.0.0][uri] and [sabre/xml 0.4.3][xml].
+
+
+2.2.0-alpha3 (2015-02-25)
+-------------------------
+
+* Contains all the changes introduced between 2.1.2 and 2.1.3.
+* The zip release ships with [sabre/vobject 3.4.2][vobj],
+  [sabre/http 4.0.0-alpha1][http], [sabre/event 2.0.1][evnt] and
+  [sabre/uri 1.0.0][uri].
+
+
+2.2.0-alpha2 (2015-01-09)
+-------------------------
+
+* Renamed `Sabre\DAV\Auth\Backend\BackendInterface::requireAuth` to
+  `challenge`, which is a more correct and better sounding name.
+* The zip release ships with [sabre/vobject 3.3.5][vobj],
+  [sabre/http 3.0.4][http], [sabre/event 2.0.1][evnt].
+
+
+2.2.0-alpha1 (2014-12-10)
+-------------------------
+
+* The browser plugin now has a new page with information about your sabredav
+  server, and shows information about every plugin that's loaded in the
+  system.
+* #191: The Authentication system can now support multiple authentication
+  backends.
+* Removed: all `$tableName` arguments from every PDO backend. This was already
+  deprecated, but has now been fully removed. All of these have been replaced
+  with public properties.
+* Deleted several classes that were already deprecated much earlier:
+  * `Sabre\CalDAV\CalendarRootNode`
+  * `Sabre\CalDAV\UserCalendars`
+  * `Sabre\DAV\Exception\FileNotFound`
+  * `Sabre\DAV\Locks\Backend\FS`
+  * `Sabre\DAV\PartialUpdate\IFile`
+  * `Sabre\DAV\URLUtil`
+* Removed: `Sabre\DAV\Client::addTrustedCertificates` and
+  `Sabre\DAV\Client::setVerifyPeer`.
+* Removed: `Sabre\DAV\Plugin::getPlugin()` can now no longer return plugins
+  based on its class name.
+* Removed: `Sabre\DAVACL\Plugin::getPrincipalByEmail()`.
+* #560: GuessContentType plugin will now set content-type to
+  `application/octet-stream` if a better content-type could not be determined.
+* #568: Added a `componentType` argument to `ICSExportPlugin`, allowing you to
+  specifically fetch `VEVENT`, `VTODO` or `VJOURNAL`.
+* #582: Authentication backend interface changed to be stateless. If you
+  implemented your own authentication backend, make sure you upgrade your class
+  to the latest API!
+* #582: `Sabre\DAV\Auth\Plugin::getCurrentUser()` is now deprecated. Use
+  `Sabre\DAV\Auth\Plugin::getCurrentPrincipal()` instead.
+* #193: Fix `Sabre\DAV\FSExt\Directory::getQuotaInfo()` on windows.
+
+
+2.1.11 (2016-??-??)
+-------------------
+
+* #805: It wasn't possible to create calendars that hold events, journals and
+  todos using MySQL, because the `components` column was 1 byte too small.
+
+
+2.1.10 (2016-03-10)
+-------------------
+
+* #784: Sync logs for address books were not correctly cleaned up after
+  deleting them.
+
+
+2.1.9 (2016-01-25)
+------------------
+
+* #674: PHP7 support (@DeepDiver1975).
+* The zip release ships with [sabre/vobject 3.5.0][vobj],
+  [sabre/http 3.0.5][http], and [sabre/event 2.0.2][evnt].
+
+
+2.1.8 (2016-01-04)
+------------------
+
+* #729: Fixed a caching problem in the Tree object.
+* #740: Bugs in `migrate20.php` script.
+* The zip release ships with [sabre/vobject 3.4.8][vobj],
+  [sabre/http 3.0.5][http], and [sabre/event 2.0.2][evnt].
+
+
+2.1.7 (2015-09-05)
+------------------
+
+* #705: A `MOVE` request that gets prevented from deleting the source resource
+  will still remove the target resource. Now all events are triggered before
+  any destructive operations.
+* The zip release ships with [sabre/vobject 3.4.7][vobj],
+  [sabre/http 3.0.5][http], and [sabre/event 2.0.2][evnt].
+
+
+2.1.6 (2015-07-21)
+------------------
+
+* #657: Migration script would break when coming a cross an iCalendar object
+  with no UID.
+* #691: Workaround for broken Windows Phone client.
+* The zip release ships with [sabre/vobject 3.4.5][vobj],
+  [sabre/http 3.0.5][http], and [sabre/event 2.0.2][evnt].
+
+
+2.1.5 (2015-07-11)
+------------------
+
+* #677: Resources with the name '0' would not get retrieved when using
+  `Depth: infinity` in a `PROPFIND` request.
+* The zip release ships with [sabre/vobject 3.4.5][vobj],
+  [sabre/http 3.0.5][http], and [sabre/event 2.0.2][evnt].
+
+
+2.1.4 (2015-05-25)
+------------------
+
+* #651: Double-encoded path in the browser plugin. Should fix a few broken
+  links in some setups.
+* #650: Correctly cleaning up change info after deleting calendars (@ErrOrnAmE).
+* #658: Updating `schedule-calendar-default-URL` does not work well, so we're
+  disabling it until there's a better fix.
+* The zip release ships with [sabre/vobject 3.4.3][vobj],
+  [sabre/http 3.0.5][http], and [sabre/event 2.0.2][evnt].
+
+
+2.1.3 (2015-02-25)
+------------------
+
+* #586: `SCHEDULE-STATUS` should not contain a reason-phrase.
+* #539: Fixed a bug related to scheduling in shared calendars.
+* #595: Support for calendar-timezone in iCalendar exports.
+* #581: findByUri would send empty prefixes to the principal backend (@soydeedo)
+* #611: Escaping a bit more HTML output in the browser plugin. (@LukasReschke)
+* #610: Don't allow discovery of arbitrary files using `..` in the browser
+  plugin (@LukasReschke).
+* Browser plugin now shows quota properties.
+* #612: PropertyStorage didn't delete properties from nodes when a node's
+  parents get deleted.
+* #581: Fixed problems related to finding attendee information during
+  scheduling.
+* The zip release ships with [sabre/vobject 3.4.2][vobj],
+  [sabre/http 3.0.4][http], and [sabre/event 2.0.1][evnt].
+
+
+2.1.2 (2014-12-10)
+------------------
+
+* #566: Another issue related to the migration script, which would cause
+  scheduling to not work well for events that were already added before the
+  migration.
+* #567: Doing freebusy requests on accounts that had 0 calendars would throw
+  a `E_NOTICE`.
+* #572: `HEAD` requests trigger a PHP warning.
+* #579: Browser plugin can throw exception for a few resourcetypes that didn't
+  have an icon defined.
+* The zip release ships with [sabre/vobject 3.3.4][vobj],
+  [sabre/http 3.0.4][http], and [sabre/event 2.0.1][evnt].
+
+
+2.1.1 (2014-11-22)
+------------------
+
+* #561: IMip Plugin didn't strip mailto: from email addresses.
+* #566: Migration process had 2 problems related to adding the `uid` field
+  to the `calendarobjects` table.
+* The zip release ships with [sabre/vobject 3.3.4][vobj],
+  [sabre/http 3.0.2][http], and [sabre/event 2.0.1][evnt].
+
+
+2.1.0 (2014-11-19)
+------------------
+
+* #541: CalDAV PDO backend didn't respect overridden PDO table names.
+* #550: Scheduling invites are no longer delivered into shared calendars.
+* #554: `calendar-multiget` `REPORT` did not work on inbox items.
+* #555: The `calendar-timezone` property is now respected for floating times
+  and all-day events in the `calendar-query`, `calendar-multiget` and
+  `free-busy-query` REPORTs.
+* #555: The `calendar-timezone` property is also respected for scheduling
+  free-busy requests.
+* #547: CalDAV system too aggressively 'corrects' incoming iCalendar data, and
+  as a result doesn't return an etag for common cases.
+* The zip release ships with [sabre/vobject 3.3.4][vobj],
+  [sabre/http 3.0.2][http], and [sabre/event 2.0.1][evnt].
+
+
+2.1.0-alpha2 (2014-10-23)
+-------------------------
+
+* Added: calendar-user-address-set to default principal search properties
+  list. This should fix iOS attendee autocomplete support.
+* Changed: Moved all 'notifications' functionality from `Sabre\CalDAV\Plugin`
+  to a new plugin: `Sabre\CalDAV\Notifications\Plugin`. If you want to use
+  notifications-related functionality, just add this plugin.
+* Changed: Accessing the caldav inbox, outbox or notification collection no
+  longer triggers getCalendarsForUser() on backends.
+* #533: New invites are no longer delivered to taks-only calendars.
+* #538: Added `calendarObjectChange` event.
+* Scheduling speedups.
+* #539: added `afterResponse` event. (@joserobleda)
+* Deprecated: All the "tableName" constructor arguments for all the PDO
+  backends are now deprecated. They still work, but will be removed in the
+  next major sabredav version. Every argument that is now deprecated can now
+  be accessed as a public property on the respective backends.
+* #529: Added getCalendarObjectByUID to PDO backend, speeding up scheduling
+  operations on large calendars.
+* The zip release ships with [sabre/vobject 3.3.3][vobj],
+  [sabre/http 3.0.2][http], and [sabre/event 2.0.1][evnt].
+
+
+2.1.0-alpha1 (2014-09-23)
+-------------------------
+
+* Added: Support for [rfc6638][rfc6638], also known as CalDAV Scheduling.
+* Added: Automatically converting between vCard 3, 4 and jCard using the
+  `Accept:` header, in CardDAV reports, and automatically converting from
+  jCard to vCard upon `PUT`. It's important to note that your backends _may_
+  now recieve both vCard 3.0 and 4.0.
+* Added: #444. Collections can now opt-in to support high-speed `MOVE`.
+* Changed: PropertyStorage backends now have a `move` method.
+* Added: `beforeMove`, and `afterMove` events.
+* Changed: A few database changes for the CalDAV PDO backend. Make sure you
+  run `bin/migrate21.php` to upgrade your database schema.
+* Changed: CalDAV backends have a new method: `getCalendarObjectByUID`. This
+  method MUST be implemented by all backends, but the `AbstractBackend` has a
+  simple default implementation for this.
+* Changed: `Sabre\CalDAV\UserCalendars` has been renamed to
+  `Sabre\CalDAV\CalendarHome`.
+* Changed: `Sabre\CalDAV\CalendarRootNode` has been renamed to
+  `Sabre\CalDAV\CalendarRoot`.
+* Changed: The IMipHandler has been completely removed. With CalDAV scheduling
+  support, it is no longer needed. It's functionality has been replaced by
+  `Sabre\CalDAV\Schedule\IMipPlugin`, which can now send emails for clients
+  other than iCal.
+* Removed: `Sabre\DAV\ObjectTree` and `Sabre\DAV\Tree\FileSystem`. All this
+  functionality has been merged into `Sabre\DAV\Tree`.
+* Changed: PrincipalBackend now has a findByUri method.
+* Changed: `PrincipalBackend::searchPrincipals` has a new optional `test`
+  argument.
+* Added: Support for the `{http://calendarserver.org/ns/}email-address-set`
+  property.
+* #460: PropertyStorage must move properties during `MOVE` requests.
+* Changed: Restructured the zip distribution to be a little bit more lean
+  and consistent.
+* #524: Full support for the `test="anyof"` attribute in principal-search
+  `REPORT`.
+* #472: Always returning lock tokens in the lockdiscovery property.
+* Directory entries in the Browser plugin are sorted by type and name.
+  (@aklomp)
+* #486: It's now possible to return additional properties when an 'allprop'
+  PROPFIND request is being done. (@aklomp)
+* Changed: Now return HTTP errors when an addressbook-query REPORT is done
+  on a uri that's not a vcard. This should help with debugging this common
+  mistake.
+* Changed: `PUT` requests with a `Content-Range` header now emit a 400 status
+  instead of 501, as per RFC7231.
+* Added: Browser plugin can now display the contents of the
+  `{DAV:}supported-privilege-set` property.
+* Added: Now reporting `CALDAV:max-resource-size`, but we're not actively
+  restricting it yet.
+* Changed: CalDAV plugin is now responsible for reporting
+  `CALDAV:supported-collation-set` and `CALDAV:supported-calendar-data`
+  properties.
+* Added: Now reporting `CARDDAV:max-resource-size`, but we're not actively
+  restricting it yet.
+* Added: Support for `CARDDAV:supported-collation-set`.
+* Changed: CardDAV plugin is now responsible for reporting
+  `CARDDAV:supported-address-data`. This functionality has been removed from
+  the CardDAV PDO backend.
+* When a REPORT is not supported, we now emit HTTP error 415, instead of 403.
+* #348: `HEAD` requests now work wherever `GET` also works.
+* Changed: Lower priority for the iMip plugins `schedule` event listener.
+* Added: #523 Custom CalDAV backends can now mark any calendar as read-only.
+* The zip release ships with [sabre/vobject 3.3.3][vobj],
+  [sabre/http 3.0.0][http], and [sabre/event 2.0.0][evnt].
+
+
+2.0.9 (2015-09-04)
+------------------
+
+* #705: A `MOVE` request that gets prevented from deleting the source resource
+  will still remove the target resource. Now all events are triggered before
+  any destructive operations.
+* The zip release ships with [sabre/vobject 3.4.6][vobj],
+  [sabre/http 2.0.4][http], and [sabre/event 1.0.1][evnt].
+
+
+
+2.0.8 (2015-07-11)
+------------------
+
+* #677: Resources with the name '0' would not get retrieved when using
+  `Depth: infinity` in a `PROPFIND` request.
+* The zip release ships with [sabre/vobject 3.3.5][vobj],
+  [sabre/http 2.0.4][http], and [sabre/event 1.0.1][evnt].
+
+
+2.0.7 (2015-05-25)
+------------------
+
+* #650: Correctly cleaning up change info after deleting calendars (@ErrOrnAmE).
+* The zip release ships with [sabre/vobject 3.3.4][vobj],
+  [sabre/http 2.0.4][http], and [sabre/event 1.0.1][evnt].
+
+
+2.0.6 (2014-12-10)
+------------------
+
+* Added `Sabre\CalDAV\CalendarRoot` as an alias for
+  `Sabre\CalDAV\CalendarRootNode`. The latter is going to be deprecated in 2.1,
+  so this makes it slightly easier to write code that works in both branches.
+* #497: Making sure we're initializing the sync-token field with a value after
+  migration.
+* The zip release ships with [sabre/vobject 3.3.4][vobj],
+  [sabre/http 2.0.4][http], and [sabre/event 1.0.1][evnt].
+
+
+2.0.5 (2014-10-14)
+------------------
+
+* #514: CalDAV PDO backend didn't work when overriding the 'calendar changes'
+  database table name.
+* #515: 304 status code was not being sent when checking preconditions.
+* The zip release ships with [sabre/vobject 3.3.3][vobj],
+  [sabre/http 2.0.4][http], and [sabre/event 1.0.1][evnt].
+
+
+2.0.4 (2014-08-27)
+------------------
+
+* #483: typo in calendars creation for PostgreSQL.
+* #487: Locks are now automatically removed after a node has been deleted.
+* #496: Improve CalDAV and CardDAV sync when there is no webdav-sync support.
+* Added: Automatically mapping internal sync-tokens to getctag.
+* The zip release ships with [sabre/vobject 3.3.1][vobj],
+  [sabre/http 2.0.4][http], and [sabre/event 1.0.1][evnt].
+
+
+2.0.3 (2014-07-14)
+------------------
+
+* #474: Fixed PropertyStorage `pathFilter()`.
+* #476: CSP policy incorrect, causing stylesheets to not load in the browser
+  plugin.
+* #475: Href properties in the browser plugin sometimes included a backslash.
+* #478: `TooMuchMatches` exception never worked. This was fixed, and we also
+  took this opportunity to rename it to `TooManyMatches`.
+* The zip release ships with [sabre/vobject 3.2.4][vobj],
+  [sabre/http 2.0.4][http], and [sabre/event 1.0.1][evnt].
+
+
+2.0.2 (2014-06-12)
+------------------
+
+* #470: Fixed compatibility with PHP < 5.4.14.
+* #467: Fixed a problem in `examples/calendarserver.php`.
+* #466: All the postgresql sample files have been updated.
+* Fixed: An error would be thrown if a client did a propfind on a node the
+  user didn't have access to.
+* Removed: Old and broken example code from the `examples/` directory.
+* The zip release ships with [sabre/vobject 3.2.3][vobj],
+  [sabre/http 2.0.3][http], and [sabre/event 1.0.1][evnt].
+
+
+2.0.1 (2014-05-28)
+------------------
+
+* #459: PROPFIND requests on Files with no Depth header would return a fatal
+  error.
+* #464: A PROPFIND allprops request should not return properties with status
+  404.
+* The zip release ships with [sabre/vobject 3.2.2][vobj],
+  [sabre/http 2.0.3][http], and [sabre/event 1.0.0][evnt].
+
+
+2.0.0 (2014-05-22)
+------------------
+
+* The zip release ships with [sabre/vobject 3.2.2][vobj],
+  [sabre/http 2.0.3][http], and [sabre/event 1.0.0][evnt].
+* Fixed: #456: Issue in sqlite migration script.
+* Updated: MySQL database schema optimized by using more efficient column types.
+* Cleaned up browser design.
+
+
+2.0.0-beta1 (2014-05-15)
+-------------------------
+
+* The zip release ships with [sabre/vobject 3.2.2][vobj],
+  [sabre/http 2.0.3][http], and [sabre/event 1.0.0][evnt].
+* BC Break: Property updating and fetching got refactored. Read the [migration
+  document][mi20] for more information. This allows for creation of a generic
+  property storage, and other property-related functionality that was not
+  possible before.
+* BC Break: Removed `propertyUpdate`, `beforeGetProperties` and
+  `afterGetProperties` events.
+* Fixed: #413: Memory optimizations for the CardDAV PDO backend.
+* Updated: Brand new browser plugin with more debugging features and a design
+  that is slightly less painful.
+* Added: Support for the `{DAV:}supported-method-set` property server-wide.
+* Making it easier for implementors to override how the CardDAV addressbook
+  home is located.
+* Fixed: Issue #422 Preconditions were not being set on PUT on non-existant
+  files. Not really a chance for data-loss, but incorrect nevertheless.
+* Fixed: Issue #428: Etag check with `If:` fails if the target is a collection.
+* Fixed: Issues #430, #431, #433: Locks plugin didn't not properly release
+  filesystem based locks.
+* Fixed: #443. Support for creating new calendar subscriptions for OS X 10.9.2
+  and up.
+* Removed: `Sabre\DAV\Server::NODE_*` constants.
+* Moved all precondition checking into a central place, instead of having to
+  think about it on a per-method basis.
+* jCal transformation for calendar-query REPORT now works again.
+* Switched to PSR-4
+* Fixed: #175. Returning ETag header upon a failed `If-Match` or
+  `If-None-Match` check.
+* Removed: `lib/Sabre/autoload.php`. Use `vendor/autoload.php` instead.
+* Removed: all the rfc documentation from the sabre/dav source. This made the
+  package needlessly larger.
+* Updated: Issue #439. Lots of updates in PATCH support. The
+  Sabre_DAV_PartialUpdate_IFile interface is now deprecated and will be
+  removed in a future version.
+* Added: `Sabre\DAV\Exception\LengthRequired`.
+
+1.9.0-alpha2 (2014-01-14)
+-------------------------
+
+* The zip release ships with sabre/vobject 3.1.3, sabre/http 2.0.1, and
+  sabre/event 1.0.0.
+* Added: Browser can now inspect any node, if ?sabreaction=browser is appended.
+* Fixed: Issue #178. Support for multiple items in the Timeout header.
+* Fixed: Issue #382. Stricter checking if calendar-query is allowed to run.
+* Added: Depth: Infinity support for PROPFIND request. Thanks Thomas Müller and
+  Markus Goetz.
+
+
+1.9.0-alpha1 (2013-11-07)
+-------------------------
+
+* The zip release ships with sabre/vobject 3.1.3, sabre/http 2.0.0alpha5, and
+  sabre/event 1.0.0.
+* BC Break: The CardDAV and CalDAV BackendInterface each have a new method:
+  getMultipleCards and getMultipleCalendarObjects. The Abstract and PDO backends
+  have default implementations, but if you implement that interface directly,
+  this method is now required.
+* BC Break: XML property classes now receive an extra argument in their
+  unserialize method ($propertyMap). This allows for recursively parsing
+  properties, if needed.
+* BC Break: Now using sabre/event for event emitting/subscription. For plugin
+  authors this means Server::subscribeEvent is now Server::on, and
+  Server::broadcastEvent is now Server::emit.
+* BC Break: Almost all core functionality moved into a CorePlugin.
+* BC Break: Most events triggered by the server got an overhaul.
+* Changed: Sabre\HTTP now moved into a dedicated sabre/http package.
+* Added: Support for WebDAV-sync (rfc6578).
+* Added: Support for caldav-subscriptions, which is an easy way for caldav
+  clients to manage a list of subscriptions on the server.
+* Added: Support for emitting and receiving jCal instead of iCalendar for
+  CalDAV.
+* Added: BasicCallback authenticaton backend, for creating simple authentication
+  systems without having to define any classes.
+* Added: A $transactionType property on the server class. This can be used for
+  logging and performance measuring purposes.
+* Fixed: If event handlers modify the request body from a PUT request, an ETag
+  is no longer sent back.
+* Added: Sabre\DAV\IMultiGet to optimize requests that retrieve information
+  about lists of resources.
+* Added: MultiGet support to default CalDAV and CardDAV backends, speeding up
+  the multiget and sync reports quite a bit!
+* Added: ICSExportPlugin can now generate jCal, filter on time-ranges and expand
+  recurrences.
+* Fixed: Read-only access to calendars still allows the sharee to modify basic
+  calendar properties, such as the displayname and color.
+* Changed: The default supportedPrivilegeSet has changed. Most privileges are no
+  longer marked as abstract.
+* Changed: More elegant ACL management for CalendarObject and Card nodes.
+* Added: Browser plugin now marks a carddav directory as type Directory, and a
+  shared calendar as 'Shared'.
+* Added: When debugExceptions is turned on, all previous exceptions are also
+  traversed.
+* Removed: Got rid of the Version classes for CalDAV, CardDAV, HTTP, and DAVACL.
+  Now that there's no separate packages anymore, this makes a bit more sense.
+* Added: Generalized the multistatus response parser a bit more, for better
+  re-use.
+* Added: Sabre\DAV\Client now has support for complex properties for PROPPATCH.
+  (Issue #299).
+* Added: Sabre\DAV\Client has support for gzip and deflate encoding.
+* Added: Sabre\DAV\Client now has support for sending objects as streams.
+* Added: Deserializer for {DAV:}current-user-privilege-set.
+* Added: Addressbooks or backends can now specify custom acl rules when creating
+  cards.
+* Added: The ability for plugins to validate custom tokens in If: headers.
+* Changed: Completely refactored the Lock plugin to deal with the new If: header
+  system.
+* Added: Checking preconditions for MOVE, COPY, DELETE and PROPPATCH methods.
+* Added: has() method on DAV\Property\SupportedReportSet.
+* Added: If header now gets checked (with ETag) all the time. Before the dealing
+  with the If-header was a responsibility of the Locking plugin.
+* Fixed: Outbox access for delegates.
+* Added: Issue 333: It's now possible to override the calendar-home in the
+  CalDAV plugin.
+* Added: A negotiateContentType to HTTP\Request. A convenience method.
+* Fixed: Issue 349: Denying copying or moving a resource into it's own subtree.
+* Fixed: SabreDAV catches every exception again.
+* Added: Issue #358, adding a component=vevent parameter to the content-types
+  for calendar objects, if the caldav backend provides this info.
+
+
+1.8.12-stable (2015-01-21)
+--------------------------
+
+* The zip release ships with sabre/vobject 2.1.7.
+* #568: Support empty usernames and passwords in basic auth.
+
+
+1.8.11 (2014-12-10)
+-------------------
+
+* The zip release ships with sabre/vobject 2.1.6.
+* Updated: MySQL database schema optimized by using more efficient column types.
+* #516: The DAV client will now only redirect to HTTP and HTTPS urls.
+
+
+1.8.10 (2014-05-15)
+-------------------
+
+* The zip release ships with sabre/vobject 2.1.4.
+* includes changes from version 1.7.12.
+
+
+1.8.9 (2014-02-26)
+------------------
+
+* The zip release ships with sabre/vobject 2.1.3.
+* includes changes from version 1.7.11.
+
+
+1.8.8 (2014-02-09)
+------------------
+
+* includes changes from version 1.7.10.
+* The zip release ships with sabre/vobject 2.1.3.
+
+1.8.7 (2013-10-02)
+------------------
+
+* the zip release ships with sabre/vobject 2.1.3.
+* includes changes from version 1.7.9.
+
+
+1.8.6 (2013-06-18)
+------------------
+
+* The zip release ships with sabre/vobject 2.1.0.
+* Includes changes from version 1.7.8.
+
+
+1.8.5 (2013-04-11)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.7.
+* Includes changes from version 1.7.7.
+
+
+1.8.4 (2013-04-08)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.7.
+* Includes changes from version 1.7.6.
+
+
+1.8.3 (2013-03-01)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.6.
+* Includes changes from version 1.7.5.
+* Fixed: organizer email-address for shared calendars is now prefixed with
+  mailto:, as it should.
+
+
+1.8.2 (2013-01-19)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.5.
+* Includes changes from version 1.7.4.
+
+
+1.8.1 (2012-12-01)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.5.
+* Includes changes from version 1.7.3.
+* Fixed: Typo in 1.7 migration script caused it to fail.
+
+
+1.8.0 (2012-11-08)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.5.
+* BC Break: Moved the entire codebase to PHP namespaces.
+* BC Break: Every backend package (CalDAV, CardDAV, Auth, Locks, Principals) now
+  has consistent naming conventions. There's a BackendInterface, and an
+  AbstractBackend class.
+* BC Break: Changed a bunch of constructor signatures in the CalDAV package, to
+  reduce dependencies on the ACL package.
+* BC Break: Sabre_CalDAV_ISharedCalendar now also has a getShares method, so
+  sharees can figure out who is also on a shared calendar.
+* Added: Sabre_DAVACL_IPrincipalCollection interface, to advertise support for
+  principal-property-search on any node.
+* Added: Simple console script to fire up a fileserver in the current directory
+  using PHP 5.4's built-in webserver.
+* Added: Sharee's can now also read out the list of invites for a shared
+  calendar.
+* Added: The Proxy principal classes now both implement an interface, for
+  greater flexiblity.
+
+
+1.7.13 (2014-07-28)
+-------------------
+
+* The zip release ships with sabre/vobject 2.1.4.
+* Changed: Removed phing and went with a custom build script for now.
+
+
+1.7.12 (2014-05-15)
+-------------------
+
+* The zip release ships with sabre/vobject 2.1.4.
+* Updated: Issue #439. Lots of updates in PATCH support. The
+  Sabre_DAV_PartialUpdate_IFile interface is now deprecated and will be removed
+  in a future version.
+* Fixed: Restoring old setting after changing libxml_disable_entity_loader.
+* Fixed: Issue #422: Preconditions were not being set on PUT on non-existant
+  files. Not really a chance for data-loss, but incorrect nevertheless.
+* Fixed: Issue #427: Now checking preconditions on DELETE requests.
+* Fixed: Issue #428: Etag check with If: fails if the target is a collection.
+* Fixed: Issue #393: PATCH request with missing end-range was handled
+  incorrectly.
+* Added: Sabre_DAV_Exception_LengthRequired to omit 411 errors.
+
+
+1.7.11 (2014-02-26)
+-------------------
+
+* The zip release ships with sabre/vobject 2.1.3.
+* Fixed: Issue #407: large downloads failed.
+* Fixed: Issue #414: XXE security problem on older PHP versions.
+
+
+1.7.10 (2014-02-09)
+-------------------
+
+* Fixed: Issue #374: Don't urlescape colon (:) when it's not required.
+* Fixed: Potential security vulnerability in the http client.
+
+
+1.7.9 (2013-10-02)
+------------------
+
+* The zip release ships with sabre/vobject 2.1.3.
+* Fixed: Issue #365. Incorrect output when principal urls have spaces in them.
+* Added: Issue #367: Automatically adding a UID to vcards that don't have them.
+
+
+1.7.8 (2013-06-17)
+------------------
+
+* The zip release ships with sabre/vobject 2.1.0.
+* Changed: Sabre\DAV\Client::verifyPeer is now a protected property (instead of
+  private).
+* Fixed: Text was incorrectly escaped in the Href and HrefList properties,
+  disallowing urls with ampersands (&) in them.
+* Added: deserializer for Sabre\DAVACL\Property\CurrentUserPrivilegeSet.
+* Fixed: Issue 335: Client only deserializes properties with status 200.
+* Fixed: Issue 341: Escaping xml in 423 Locked error responses.
+* Added: Issue 339: beforeGetPropertiesForPath event.
+
+
+1.7.7 (2013-04-11)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.7.
+* Fixed: Assets in the browser plugins were not being served on windows
+  machines.
+
+
+1.7.6 (2013-04-08)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.7.
+* Fixed: vcardurl in database schema can now hold 255 characters instead of 80
+  (which is often way to small).
+* Fixed: The browser plugin potentially allowed people to open any arbitrary
+  file on windows servers (CVE-2013-1939).
+
+
+1.7.5 (2013-03-01)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.6.
+* Change: No longer advertising support for 4.0 vcards. iOS and OS X address
+  book don't handle this well, and just advertising 3.0 support seems like the
+  most logical course of action.
+* Added: ->setVerifyPeers to Sabre_DAV_Client (greatly resisting against it,
+  don't use this..).
+
+
+1.7.4 (2013-01-19)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.5.
+* Changed: To be compatibile with MS Office 2011 for Mac, a workaround was
+  removed that was added to support old versions of Windows XP (pre-SP3).
+  Indeed! We needed a crazy workaround to work with one MS product in the past,
+  and we can't keep that workaround to be compatible with another MS product.
+* Fixed: expand-properties REPORT had incorrect values for the href element.
+* Fixed: Range requests now work for non-seekable streams. (Thanks Alfred
+  Klomp).
+* Fixed: Changed serialization of {DAV:}getlastmodified and {DAV:}supportedlock
+  to improve compatiblity with MS Office 2011 for Mac.
+* Changed: reverted the automatic translation of 'DAV:' xml namespaces to
+  'urn:DAV' when parsing files. Issues were reported with libxml 2.6.32, on a
+  relatively recent debian release, so we'll wait till 2015 to take this one out
+  again.
+* Added: Sabre_DAV_Exception_ServiceUnavailable, for emitting 503's.
+
+
+1.7.3 (2012-12-01)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.5.
+* Fixed: Removing double slashes from getPropertiesForPath.
+* Change: Marked a few more properties in the CardDAV as protected, instead of
+  private.
+* Fixed: SharingPlugin now plays nicer with other plugins with similar
+  functionality.
+* Fixed: Issue 174. Sending back HTTP/1.0 for requests with this version.
+
+
+1.7.2 (2012-11-08)
+------------------
+
+* The zip release ships with sabre/vobject 2.0.5.
+* Added: ACL plugin advertises support for 'calendarserver-principal-
+  property-search'.
+* Fixed: [#153] Allowing for relative http principals in iMip requests.
+* Added: Support for cs:first-name and cs:last-name properties in sharing
+  invites.
+* Fixed: Made a bunch of properties protected, where they were private before.
+* Added: Some non-standard properties for sharing to improve compatibility.
+* Fixed: some bugfixes in postgres sql script.
+* Fixed: When requesting some properties using PROPFIND, they could show up as
+  both '200 Ok' and '403 Forbidden'.
+* Fixed: calendar-proxy principals were not checked for deeper principal
+  membership than 1 level.
+* Fixed: setGroupMemberSet argument now correctly receives relative principal
+  urls, instead of the absolute ones.
+* Fixed: Server class will filter out any bonus properties if any extra were
+  returned. This means the implementor of the IProperty class can be a bit
+  lazier when implementing. Note: bug numbers after this line refer to Google
+  Code tickets. We're using github now.
+
+
+1.7.1 (2012-10-07)
+------------------
+
+* Fixed: include path problem in the migration script.
+
+
+1.7.0 (2012-10-06)
+------------------
+
+* BC Break: The calendarobjects database table has a bunch of new fields, and a
+  migration script is required to ensure everything will keep working. Read the
+  wiki for more details.
+* BC Break: The ICalendar interface now has a new method: calendarQuery.
+* BC Break: In this version a number of classes have been deleted, that have
+  been previously deprecated. Namely: - Sabre_DAV_Directory (now:
+  Sabre_DAV_Collection) - Sabre_DAV_SimpleDirectory (now:
+  Sabre_DAV_SimpleCollection)
+* BC Break: Sabre_CalDAV_Schedule_IMip::sendMessage now has an extra argument.
+  If you extended this class, you should fix this method. It's only used for
+  informational purposes.
+* BC Break: The DAV: namespace is no longer converted to urn:DAV. This was a
+  workaround for a bug in older PHP versions (pre-5.3).
+* Removed: Sabre.includes.php was deprecated, and is now removed.
+* Removed: Sabre_CalDAV_Server was deprecated, and is now removed. Please use
+  Sabre_DAV_Server and check the examples in the examples/ directory.
+* Changed: The Sabre_VObject library now spawned into it's own project! The
+  VObject library is still included in the SabreDAV zip package.
+* Added: Experimental interfaces to allow implementation of caldav-sharing. Note
+  that no implementation is provided yet, just the api hooks.
+* Added: Free-busy reporting compliant with the caldav-scheduling standard. This
+  allows iCal and other clients to fetch other users' free-busy data.
+* Added: Experimental NotificationSupport interface to add caldav notifications.
+* Added: VCF Export plugin. If enabled, it can generate an export of an entire
+  addressbook.
+* Added: Support for PATCH using a SabreDAV format, to live-patch files.
+* Added: Support for Prefer: return-minimal and Brief: t headers for PROPFIND
+  and PROPPATCH requests.
+* Changed: Responsibility for dealing with the calendar-query is now moved from
+  the CalDAV plugin to the CalDAV backends. This allows for heavy optimizations.
+* Changed: The CalDAV PDO backend is now a lot faster for common calendar
+  queries.
+* Changed: We are now using the composer autoloader.
+* Changed: The CalDAV backend now all implement an interface.
+* Changed: Instead of Sabre_DAV_Property, Sabre_DAV_PropertyInterface is now the
+  basis of every property class.
+* Update: Caching results for principal lookups. This should cut down queries
+  and performance for a number of heavy requests.
+* Update: ObjectTree caches lookups much more aggresively, which will help
+  especially speeding up a bunch of REPORT queries.
+* Added: Support for the schedule-calendar-transp property.
+* Fixed: Marking both the text/calendar and text/x-vcard as UTF-8 encoded.
+* Fixed: Workaround for the SOGO connector, as it doesn't understand receiving
+  "text/x-vcard; charset=utf-8" for a contenttype.
+* Added: Sabre_DAV_Client now throws more specific exceptions in cases where we
+  already has an exception class.
+* Added: Sabre_DAV_PartialUpdate. This plugin allows you to use the PATCH method
+  to update parts of a file.
+* Added: Tons of timezone name mappings for Microsoft Exchange.
+* Added: Support for an 'exception' event in the server class.
+* Fixed: Uploaded VCards without a UID are now rejected. (thanks Dominik!)
+* Fixed: Rejecting calendar objects if they are not in the
+  supported-calendar-component list. (thanks Armin!)
+* Fixed: Issue 219: serialize() now reorders correctly.
+* Fixed: Sabre_DAV_XMLUtil no longer returns empty $dom->childNodes if there is
+  whitespace in $dom.
+* Fixed: Returning 409 Conflict instead of 500 when an attempt is made to create
+  a file as a child of something that's not a collection.
+* Fixed: Issue 237: xml-encoding values in SabreDAV error responses.
+* Fixed: Returning 403, instead of 501 when an unknown REPORT is requested.
+* Fixed: Postfixing slash on {DAV:}owner properties.
+* Fixed: Several embarrassing spelling mistakes in docblocks.
+
+
+1.6.10 (2013-06-17)
+-------------------
+
+* Fixed: Text was incorrectly escaped in the Href and HrefList properties,
+  disallowing urls with ampersands (&) in them.
+* Fixed: Issue 341: Escaping xml in 423 Locked error responses.
+
+
+1.6.9 (2013-04-11)
+------------------
+
+* Fixed: Assets in the browser plugins were not being served on windows
+  machines.
+
+
+1.6.8 (2013-04-08)
+------------------
+
+* Fixed: vcardurl in database schema can now hold 255 characters instead of 80
+  (which is often way to small).
+* Fixed: The browser plugin potentially allowed people to open any arbitrary
+  file on windows servers. (CVE-2013-1939).
+
+
+1.6.7 (2013-03-01)
+------------------
+
+* Change: No longer advertising support for 4.0 vcards. iOS and OS X address
+  book don't handle this well, and just advertising 3.0 support seems like the
+  most logical course of action.
+* Added: ->setVerifyPeers to Sabre_DAV_Client (greatly resisting against it,
+  don't use this..).
+
+
+1.6.6 (2013-01-19)
+------------------
+
+* Fixed: Backported a fix for broken XML serialization in error responses.
+  (Thanks @DeepDiver1975!)
+
+
+1.6.5 (2012-10-04)
+------------------
+
+* Fixed: Workaround for line-ending bug OS X 10.8 addressbook has.
+* Added: Ability to allow users to set SSL certificates for the Client class.
+  (Thanks schiesbn!).
+* Fixed: Directory indexes with lots of nodes should be a lot faster.
+* Fixed: Issue 235: E_NOTICE thrown when doing a propfind request with
+  Sabre_DAV_Client, and no valid properties are returned.
+* Fixed: Issue with filtering on alarms in tasks.
+
+
+1.6.4 (2012-08-02)
+------------------
+
+* Fixed: Issue 220: Calendar-query filters may fail when filtering on alarms, if
+  an overridden event has it's alarm removed.
+* Fixed: Compatibility for OS/X 10.8 iCal in the IMipHandler.
+* Fixed: Issue 222: beforeWriteContent shouldn't be called for lock requests.
+* Fixed: Problem with POST requests to the outbox if mailto: was not lower
+  cased.
+* Fixed: Yearly recurrence rule expansion on leap-days no behaves correctly.
+* Fixed: Correctly checking if recurring, all-day events with no dtstart fall in
+  a timerange if the start of the time-range exceeds the start of the instance
+  of an event, but not the end.
+* Fixed: All-day recurring events wouldn't match if an occurence ended exactly
+  on the start of a time-range.
+* Fixed: HTTP basic auth did not correctly deal with passwords containing colons
+  on some servers.
+* Fixed: Issue 228: DTEND is now non-inclusive for all-day events in the
+  calendar-query REPORT and free-busy calculations.
+
+
+1.6.3 (2012-06-12)
+------------------
+
+* Added: It's now possible to specify in Sabre_DAV_Client which type of
+  authentication is to be used.
+* Fixed: Issue 206: Sabre_DAV_Client PUT requests are fixed.
+* Fixed: Issue 205: Parsing an iCalendar 0-second date interval.
+* Fixed: Issue 112: Stronger validation of iCalendar objects. Now making sure
+  every iCalendar object only contains 1 component, and disallowing vcards,
+  forcing every component to have a UID.
+* Fixed: Basic validation for vcards in the CardDAV plugin.
+* Fixed: Issue 213: Workaround for an Evolution bug, that prevented it from
+  updating events.
+* Fixed: Issue 211: A time-limit query on a non-relative alarm trigger in a
+  recurring event could result in an endless loop.
+* Fixed: All uri fields are now a maximum of 200 characters. The Bynari outlook
+  plugin used much longer strings so this should improve compatibility.
+* Fixed: Added a workaround for a bug in KDE 4.8.2 contact syncing. See
+  https://bugs.kde.org/show_bug.cgi?id=300047
+* Fixed: Issue 217: Sabre_DAV_Tree_FileSystem was pretty broken.
+
+
+1.6.2 (2012-04-16)
+------------------
+
+* Fixed: Sabre_VObject_Node::$parent should have been public.
+* Fixed: Recurrence rules of events are now taken into consideration when doing
+  time-range queries on alarms.
+* Fixed: Added a workaround for the fact that php's DateInterval cannot parse
+  weeks and days at the same time.
+* Added: Sabre_DAV_Server::$exposeVersion, allowing you to hide SabreDAV's
+  version number from various outputs.
+* Fixed: DTSTART values would be incorrect when expanding events.
+* Fixed: DTSTART and DTEND would be incorrect for expansion of WEEKLY BYDAY
+  recurrences.
+* Fixed: Issue 203: A problem with overridden events hitting the exact date and
+  time of a subsequent event in the recurrence set.
+* Fixed: There was a problem with recurrence rules, for example the 5th tuesday
+  of the month, if this day did not exist.
+* Added: New HTTP status codes from draft-nottingham-http-new-status-04.
+
+
+1.6.1 (2012-03-05)
+------------------
+
+* Added: createFile and put() can now return an ETag.
+* Added: Sending back an ETag on for operations on CardDAV backends. This should
+  help with OS X 10.6 Addressbook compatibility.
+* Fixed: Fixed a bug where an infinite loop could occur in the recurrence
+  iterator if the recurrence was YEARLY, with a BYMONTH rule, and either BYDAY
+  or BYMONTHDAY match the first day of the month.
+* Fixed: Events that are excluded using EXDATE are still counted in the COUNT=
+  parameter in the RRULE property.
+* Added: Support for time-range filters on VALARM components.
+* Fixed: Correctly filtering all-day events.
+* Fixed: Sending back correct mimetypes from the browser plugin (thanks
+  Jürgen).
+* Fixed: Issue 195: Sabre_CardDAV pear package had an incorrect dependency.
+* Fixed: Calendardata would be destroyed when performing a MOVE request.
+
+
+1.6.0 (2012-02-22)
+------------------
+
+* BC Break: Now requires PHP 5.3
+* BC Break: Any node that implemented Sabre_DAVACL_IACL must now also implement
+  the getSupportedPrivilegeSet method. See website for details.
+* BC Break: Moved functions from Sabre_CalDAV_XMLUtil to
+  Sabre_VObject_DateTimeParser.
+* BC Break: The Sabre_DAVACL_IPrincipalCollection now has two new methods:
+  'searchPrincipals' and 'updatePrincipal'.
+* BC Break: Sabre_DAV_ILockable is removed and all related per-node locking
+  functionality.
+* BC Break: Sabre_DAV_Exception_FileNotFound is now deprecated in favor of
+  Sabre_DAV_Exception_NotFound. The former will be removed in a later version.
+* BC Break: Removed Sabre_CalDAV_ICalendarUtil, use Sabre_VObject instead.
+* BC Break: Sabre_CalDAV_Server is now deprecated, check out the documentation
+  on how to setup a caldav server with just Sabre_DAV_Server.
+* BC Break: Default Principals PDO backend now needs a new field in the
+  'principals' table. See the website for details.
+* Added: Ability to create new calendars and addressbooks from within the
+  browser plugin.
+* Added: Browser plugin: icons for various nodes.
+* Added: Support for FREEBUSY reports!
+* Added: Support for creating principals with admin-level privileges.
+* Added: Possibility to let server send out invitation emails on behalf of
+  CalDAV client, using Sabre_CalDAV_Schedule_IMip.
+* Changed: beforeCreateFile event now passes data argument by reference.
+* Changed: The 'propertyMap' property from Sabre_VObject_Reader, must now be
+  specified in Sabre_VObject_Property::$classMap.
+* Added: Ability for plugins to tell the ACL plugin which principal plugins are
+  searchable.
+* Added: [DAVACL] Per-node overriding of supported privileges. This allows for
+  custom privileges where needed.
+* Added: [DAVACL] Public 'principalSearch' method on the DAVACL plugin, which
+  allows for easy searching for principals, based on their properties.
+* Added: Sabre_VObject_Component::getComponents() to return a list of only
+  components and not properties.
+* Added: An includes.php file in every sub-package (CalDAV, CardDAV, DAV,
+  DAVACL, HTTP, VObject) as an alternative to the autoloader. This often works
+  much faster.
+* Added: Support for the 'Me card', which allows Addressbook.app users specify
+  which vcard is their own.
+* Added: Support for updating principal properties in the DAVACL principal
+  backends.
+* Changed: Major refactoring in the calendar-query REPORT code. Should make
+  things more flexible and correct.
+* Changed: The calendar-proxy-[read|write] principals will now only appear in
+  the tree, if they actually exist in the Principal backend. This should reduce
+  some problems people have been having with this.
+* Changed: Sabre_VObject_Element_* classes are now renamed to
+  Sabre_VObject_Property. Old classes are retained for backwards compatibility,
+  but this will be removed in the future.
+* Added: Sabre_VObject_FreeBusyGenerator to generate free-busy reports based on
+  lists of events.
+* Added: Sabre_VObject_RecurrenceIterator to find all the dates and times for
+  recurring events.
+* Fixed: Issue 97: Correctly handling RRULE for the calendar-query REPORT.
+* Fixed: Issue 154: Encoding of VObject parameters with no value was incorrect.
+* Added: Support for {DAV:}acl-restrictions property from RFC3744.
+* Added: The contentlength for calendar objects can now be supplied by a CalDAV
+  backend, allowing for more optimizations.
+* Fixed: Much faster implementation of Sabre_DAV_URLUtil::encodePath.
+* Fixed: {DAV:}getcontentlength may now be not specified.
+* Fixed: Issue 66: Using rawurldecode instead of urldecode to decode paths from
+  clients. This means that + will now be treated as a literal rather than a
+  space, and this should improve compatibility with the Windows built-in client.
+* Added: Sabre_DAV_Exception_PaymentRequired exception, to emit HTTP 402 status
+  codes.
+* Added: Some mysql unique constraints to example files.
+* Fixed: Correctly formatting HTTP dates.
+* Fixed: Issue 94: Sending back Last-Modified header for 304 responses.
+* Added: Sabre_VObject_Component_VEvent, Sabre_VObject_Component_VJournal,
+  Sabre_VObject_Component_VTodo and Sabre_VObject_Component_VCalendar.
+* Changed: Properties are now also automatically mapped to their appropriate
+  classes, if they are created using the add() or __set() methods.
+* Changed: Cloning VObject objects now clones the entire tree, rather than just
+  the default shallow copy.
+* Added: Support for recurrence expansion in the CALDAV:calendar-multiget and
+  CALDAV:calendar-query REPORTS.
+* Changed: CalDAV PDO backend now sorts calendars based on the internal
+  'calendarorder' field.
+* Added: Issue 181: Carddav backends may no optionally not supply the carddata
+  in getCards, if etag and size are specified. This may speed up certain
+  requests.
+* Added: More arguments to beforeWriteContent and beforeCreateFile (see
+  WritingPlugins wiki document).
+* Added: Hook for iCalendar validation. This allows us to validate iCalendar
+  objects when they're uploaded. At the moment we're just validating syntax.
+* Added: VObject now support Windows Timezone names correctly (thanks mrpace2).
+* Added: If a timezonename could not be detected, we fall back on the default
+  PHP timezone.
+* Added: Now a Composer package (thanks willdurand).
+* Fixed: Support for \N as a newline character in the VObject reader.
+* Added: afterWriteContent, afterCreateFile and afterUnbind events.
+* Added: Postgresql example files. Not part of the unittests though, so use at
+  your own risk.
+* Fixed: Issue 182: Removed backticks from sql queries, so it will work with
+  Postgres.
+
+
+1.5.9 (2012-04-16)
+------------------
+
+* Fixed: Issue with parsing timezone identifiers that were surrounded by quotes.
+  (Fixes emClient compatibility).
+
+
+1.5.8 (2012-02-22)
+------------------
+
+* Fixed: Issue 95: Another timezone parsing issue, this time in calendar-query.
+
+
+1.5.7 (2012-02-19)
+------------------
+
+* Fixed: VObject properties are now always encoded before components.
+* Fixed: Sabre_DAVACL had issues with multiple levels of privilege aggregration.
+* Changed: Added 'GuessContentType' plugin to fileserver.php example.
+* Fixed: The Browser plugin will now trigger the correct events when creating
+  files.
+* Fixed: The ICSExportPlugin now considers ACL's.
+* Added: Made it optional to supply carddata from an Addressbook backend when
+  requesting getCards. This can make some operations much faster, and could
+  result in much lower memory use.
+* Fixed: Issue 187: Sabre_DAV_UUIDUtil was missing from includes file.
+* Fixed: Issue 191: beforeUnlock was triggered twice.
+
+
+1.5.6 (2012-01-07)
+------------------
+
+* Fixed: Issue 174: VObject could break UTF-8 characters.
+* Fixed: pear package installation issues.
+
+
+1.5.5 (2011-12-16)
+------------------
+
+* Fixed: CalDAV time-range filter workaround for recurring events.
+* Fixed: Bug in Sabre_DAV_Locks_Backend_File that didn't allow multiple files to
+  be locked at the same time.
+
+
+1.5.4 (2011-10-28)
+------------------
+
+* Fixed: GuessContentType plugin now supports mixed case file extensions.
+* Fixed: DATE-TIME encoding was wrong in VObject. (we used 'DATETIME').
+* Changed: Sending back HTTP 204 after a PUT request on an existing resource
+  instead of HTTP 200. This should fix Evolution CardDAV client compatibility.
+* Fixed: Issue 95: Parsing X-LIC-LOCATION if it's available.
+* Added: All VObject elements now have a reference to their parent node.
+
+
+1.5.3 (2011-09-28)
+------------------
+
+* Fixed: Sabre_DAV_Collection was missing from the includes file.
+* Fixed: Issue 152. iOS 1.4.2 apparantly requires HTTP/1.1 200 OK to be in
+  uppercase.
+* Fixed: Issue 153: Support for files with mixed newline styles in
+  Sabre_VObject.
+* Fixed: Issue 159: Automatically converting any vcard and icalendardata to
+  UTF-8.
+* Added: Sabre_DAV_SimpleFile class for easy static file creation.
+* Added: Issue 158: Support for the CARDDAV:supported-address-data property.
+
+
+1.5.2 (2011-09-21)
+------------------
+
+* Fixed: carddata and calendardata MySQL fields are now of type 'mediumblob'.
+  'TEXT' was too small sometimes to hold all the data.
+* Fixed: {DAV:}supported-report-set is now correctly reporting the reports for
+  IAddressBook.
+* Added: Sabre_VObject_Property::add() to add duplicate parameters to
+  properties.
+* Added: Issue 151: Sabre_CalDAV_ICalendar and Sabre_CalDAV_ICalendarObject
+  interfaces.
+* Fixed: Issue 140: Not returning 201 Created if an event cancelled the creation
+  of a file.
+* Fixed: Issue 150: Faster URLUtil::encodePath() implementation.
+* Fixed: Issue 144: Browser plugin could interfere with
+  TemporaryFileFilterPlugin if it was loaded first.
+* Added: It's not possible to specify more 'alternate uris' in principal
+  backends.
+
+
+1.5.1 (2011-08-24)
+------------------
+
+* Fixed: Issue 137. Hiding action interface in HTML browser for non-collections.
+* Fixed: addressbook-query is now correctly returned from the
+  {DAV:}supported-report-set property.
+* Fixed: Issue 142: Bugs in groupwareserver.php example.
+* Fixed: Issue 139: Rejecting PUT requests with Content-Range.
+
+
+1.5.0 (2011-08-12)
+------------------
+
+* Added: CardDAV support.
+* Added: An experimental WebDAV client.
+* Added: MIME-Directory grouping support in the VObject library. This is very
+  useful for people attempting to parse vcards.
+* BC Break: Adding parameters with the VObject libraries now overwrites the
+  previous parameter, rather than just add it. This makes more sense for 99% of
+  the cases.
+* BC Break: lib/Sabre.autoload.php is now removed in favor of
+  lib/Sabre/autoload.php.
+* Deprecated: Sabre_DAV_Directory is now deprecated and will be removed in a
+  future version. Use Sabre_DAV_Collection instead.
+* Deprecated: Sabre_DAV_SimpleDirectory is now deprecated and will be removed in
+  a future version. Use Sabre_DAV_SimpleCollection instead.
+* Fixed: Problem with overriding tablenames for the CalDAV backend.
+* Added: Clark-notation parser to XML utility.
+* Added: unset() support to VObject components.
+* Fixed: Refactored CalDAV property fetching to be faster and simpler.
+* Added: Central string-matcher for CalDAV and CardDAV plugins.
+* Added: i;unicode-casemap support
+* Fixed: VObject bug: wouldn't parse parameters if they weren't specified in
+  uppercase.
+* Fixed: VObject bug: Parameters now behave more like Properties.
+* Fixed: VObject bug: Parameters with no value are now correctly parsed.
+* Changed: If calendars don't specify which components they allow, 'all'
+  components are assumed (e.g.: VEVENT, VTODO, VJOURNAL).
+* Changed: Browser plugin now uses POST variable 'sabreAction' instead of
+  'action' to reduce the chance of collisions.
+
+
+1.4.4 (2011-07-07)
+------------------
+
+* Fixed: Issue 131: Custom CalDAV backends could break in certain cases.
+* Added: The option to override the default tablename all PDO backends use.
+  (Issue 60).
+* Fixed: Issue 124: 'File' authentication backend now takes realm into
+  consideration.
+* Fixed: Sabre_DAV_Property_HrefList now properly deserializes. This allows
+  users to update the {DAV:}group-member-set property.
+* Added: Helper functions for DateTime-values in Sabre_VObject package.
+* Added: VObject library can now automatically map iCalendar properties to
+  custom classes.
+
+
+1.4.3 (2011-04-25)
+------------------
+
+* Fixed: Issue 123: Added workaround for Windows 7 UNLOCK bug.
+* Fixed: datatype of lastmodified field in mysql.calendars.sql. Please change
+  the DATETIME field to an INT to ensure this field will work correctly.
+* Change: Sabre_DAV_Property_Principal is now renamed to
+  Sabre_DAVACL_Property_Principal.
+* Added: API level support for ACL HTTP method.
+* Fixed: Bug in serializing {DAV:}acl property.
+* Added: deserializer for {DAV:}resourcetype property.
+* Added: deserializer for {DAV:}acl property.
+* Added: deserializer for {DAV:}principal property.
+
+
+1.4.2-beta (2011-04-01)
+-----------------------
+
+* Added: It's not possible to disable listing of nodes that are denied read
+  access by ACL.
+* Fixed: Changed a few properties in CalDAV classes from private to protected.
+* Fixed: Issue 119: Terrible things could happen when relying on guessBaseUri,
+  the server was running on the root of the domain and a user tried to access a
+  file ending in .php. This is a slight BC break.
+* Fixed: Issue 118: Lock tokens in If headers without a uri should be treated as
+  the request uri, not 'all relevant uri's.
+* Fixed: Issue 120: PDO backend was incorrectly fetching too much locks in cases
+  where there were similar named locked files in a directory.
+
+
+1.4.1-beta (2011-02-26)
+-----------------------
+
+* Fixed: Sabre_DAV_Locks_Backend_PDO returned too many locks.
+* Fixed: Sabre_HTTP_Request::getHeader didn't return Content-Type when running
+  on apache, so a few workarounds were added.
+* Change: Slightly changed CalDAV Backend API's, to allow for heavy
+  optimizations. This is non-bc breaking.
+
+
+1.4.0-beta (2011-02-12)
+-----------------------
+
+* Added: Partly RFC3744 ACL support.
+* Added: Calendar-delegation (caldav-proxy) support.
+* BC break: In order to fix Issue 99, a new argument had to be added to
+  Sabre_DAV_Locks_Backend_*::getLocks classes. Consult the classes for details.
+* Deprecated: Sabre_DAV_Locks_Backend_FS is now deprecated and will be removed
+  in a later version. Use PDO or the new File class instead.
+* Deprecated: The Sabre_CalDAV_ICalendarUtil class is now marked deprecated, and
+  will be removed in a future version. Please use Sabre_VObject instead.
+* Removed: All principal-related functionality has been removed from the
+  Sabre_DAV_Auth_Plugin, and moved to the Sabre_DAVACL_Plugin.
+* Added: VObject library, for easy vcard/icalendar parsing using a natural
+  interface.
+* Added: Ability to automatically generate full .ics feeds off calendars. To
+  use: Add the Sabre_CalDAV_ICSExportPlugin, and add ?export to your calendar
+  url.
+* Added: Plugins can now specify a pluginname, for easy access using
+  Sabre_DAV_Server::getPlugin().
+* Added: beforeGetProperties event.
+* Added: updateProperties event.
+* Added: Principal listings and calendar-access can now be done privately,
+  disallowing users from accessing or modifying other users' data.
+* Added: You can now pass arrays to the Sabre_DAV_Server constructor. If it's an
+  array with node-objects, a Root collection will automatically be created, and
+  the nodes are used as top-level children.
+* Added: The principal base uri is now customizable. It used to be hardcoded to
+  'principals/[user]'.
+* Added: getSupportedReportSet method in ServerPlugin class. This allows you to
+  easily specify which reports you're implementing.
+* Added: A '..' link to the HTML browser.
+* Fixed: Issue 99: Locks on child elements were ignored when their parent nodes
+  were deleted.
+* Fixed: Issue 90: lockdiscovery property and LOCK response now include a
+  {DAV}lockroot element.
+* Fixed: Issue 96: support for 'default' collation in CalDAV text-match filters.
+* Fixed: Issue 102: Ensuring that copy and move with identical source and
+  destination uri's fails.
+* Fixed: Issue 105: Supporting MKCALENDAR with no body.
+* Fixed: Issue 109: Small fixes in Sabre_HTTP_Util.
+* Fixed: Issue 111: Properly catching the ownername in a lock (if it's a string)
+* Fixed: Sabre_DAV_ObjectTree::nodeExist always returned false for the root
+  node.
+* Added: Global way to easily supply new resourcetypes for certain node classes.
+* Fixed: Issue 59: Allowing the user to override the authentication realm in
+  Sabre_CalDAV_Server.
+* Update: Issue 97: Looser time-range checking if there's a recurrence rule in
+  an event. This fixes 'missing recurring events'.
+
+
+1.3.0 (2010-10-14)
+------------------
+
+* Added: childExists method to Sabre_DAV_ICollection. This is an api break, so
+  if you implement Sabre_DAV_ICollection directly, add the method.
+* Changed: Almost all HTTP method implementations now take a uri argument,
+  including events. This allows for internal rerouting of certain calls. If you
+  have custom plugins, make sure they use this argument. If they don't, they
+  will likely still work, but it might get in the way of future changes.
+* Changed: All getETag methods MUST now surround the etag with double-quotes.
+  This was a mistake made in all previous SabreDAV versions. If you don't do
+  this, any If-Match, If-None-Match and If: headers using Etags will work
+  incorrectly. (Issue 85).
+* Added: Sabre_DAV_Auth_Backend_AbstractBasic class, which can be used to easily
+  implement basic authentication.
+* Removed: Sabre_DAV_PermissionDenied class. Use Sabre_DAV_Forbidden instead.
+* Removed: Sabre_DAV_IDirectory interface, use Sabre_DAV_ICollection instead.
+* Added: Browser plugin now uses {DAV:}displayname if this property is
+  available.
+* Added: Cache layer in the ObjectTree.
+* Added: Tree classes now have a delete and getChildren method.
+* Fixed: If-Modified-Since and If-Unmodified-Since would be incorrect if the
+  date is an exact match.
+* Fixed: Support for multiple ETags in If-Match and If-None-Match headers.
+* Fixed: Improved baseUrl handling.
+* Fixed: Issue 67: Non-seekable stream support in ::put()/::get().
+* Fixed: Issue 65: Invalid dates are now ignored.
+* Updated: Refactoring in Sabre_CalDAV to make everything a bit more ledgable.
+* Fixed: Issue 88, Issue 89: Fixed compatibility for running SabreDAV on
+  Windows.
+* Fixed: Issue 86: Fixed Content-Range top-boundary from 'file size' to 'file
+  size'-1.
+
+
+1.2.5 (2010-08-18)
+------------------
+
+* Fixed: Issue 73: guessBaseUrl fails for some servers.
+* Fixed: Issue 67: SabreDAV works better with non-seekable streams.
+* Fixed: If-Modified-Since and If-Unmodified-Since would be incorrect if
+  the date is an exact match.
+
+
+1.2.4 (2010-07-13)
+------------------
+
+* Fixed: Issue 62: Guessing baseUrl fails when url contains a query-string.
+* Added: Apache configuration sample for CGI/FastCGI setups.
+* Fixed: Issue 64: Only returning calendar-data when it was actually requested.
+
+
+1.2.3 (2010-06-26)
+------------------
+
+* Fixed: Issue 57: Supporting quotes around etags in If-Match and If-None-Match
+
+
+1.2.2 (2010-06-21)
+------------------
+
+* Updated: SabreDAV now attempts to guess the BaseURI if it's not set.
+* Updated: Better compatibility with BitKinex
+* Fixed: Issue 56: Incorrect behaviour for If-None-Match headers and GET
+  requests.
+* Fixed: Issue with certain encoded paths in Browser Plugin.
+
+
+1.2.1 (2010-06-07)
+------------------
+
+* Fixed: Issue 50, patch by Mattijs Hoitink.
+* Fixed: Issue 51, Adding windows 7 lockfiles to TemporaryFileFilter.
+* Fixed: Issue 38, Allowing custom filters to be added to TemporaryFileFilter.
+* Fixed: Issue 53, ETags in the If: header were always failing. This behaviour
+  is now corrected.
+* Added: Apache Authentication backend, in case authentication through .htaccess
+  is desired.
+* Updated: Small improvements to example files.
+
+
+1.2.0 (2010-05-24)
+------------------
+
+* Fixed: Browser plugin now displays international characters.
+* Changed: More properties in CalDAV classes are now protected instead of
+  private.
+
+
+1.2.0beta3 (2010-05-14)
+-----------------------
+
+* Fixed: Custom properties were not properly sent back for allprops requests.
+* Fixed: Issue 49, incorrect parsing of PROPPATCH, affecting Office 2007.
+* Changed: Removed CalDAV items from includes.php, and added a few missing ones.
+
+
+1.2.0beta2 (2010-05-04)
+-----------------------
+
+* Fixed: Issue 46: Fatal error for some non-existent nodes.
+* Updated: some example sql to include email address.
+* Added: 208 and 508 statuscodes from RFC5842.
+* Added: Apache2 configuration examples
+
+
+1.2.0beta1 (2010-04-28)
+-----------------------
+
+* Fixed: redundant namespace declaration in resourcetypes.
+* Fixed: 2 locking bugs triggered by litmus when no Sabre_DAV_ILockable
+  interface is used.
+* Changed: using http://sabredav.org/ns for all custom xml properties.
+* Added: email address property to principals.
+* Updated: CalendarObject validation.
+
+
+1.2.0alpha4 (2010-04-24)
+------------------------
+
+* Added: Support for If-Range, If-Match, If-None-Match, If-Modified-Since,
+  If-Unmodified-Since.
+* Changed: Brand new build system. Functionality is split up between Sabre,
+  Sabre_HTTP, Sabre_DAV and Sabre_CalDAV packages. In addition to that a new
+  non-pear package will be created with all this functionality combined.
+* Changed: Autoloader moved to Sabre/autoload.php.
+* Changed: The Allow: header is now more accurate, with appropriate HTTP methods
+  per uri.
+* Changed: Now throwing back Sabre_DAV_Exception_MethodNotAllowed on a few
+  places where Sabre_DAV_Exception_NotImplemented was used.
+
+
+1.2.0alpha3 (2010-04-20)
+------------------------
+
+* Update: Complete rewrite of property updating. Now easier to use and atomic.
+* Fixed: Issue 16, automatically adding trailing / to baseUri.
+* Added: text/plain is used for .txt files in GuessContentType plugin.
+* Added: support for principal-property-search and principal-search-property-set
+  reports.
+* Added: Issue 31: Hiding exception information by default. Can be turned on
+  with the Sabre_DAV_Server::$debugExceptions property.
+
+
+1.2.0alpha2 (2010-04-08)
+------------------------
+
+* Added: Calendars are now private and can only be read by the owner.
+* Fixed: double namespace declaration in multistatus responses.
+* Added: MySQL database dumps. MySQL is now also supported next to SQLite.
+* Added: expand-properties REPORT from RFC 3253.
+* Added: Sabre_DAV_Property_IHref interface for properties exposing urls.
+* Added: Issue 25: Throwing error on broken Finder behaviour.
+* Changed: Authentication backend is now aware of current user.
+
+
+1.2.0alpha1 (2010-03-31)
+------------------------
+
+* Fixed: Issue 26: Workaround for broken GVFS behaviour with encoded special
+  characters.
+* Fixed: Issue 34: Incorrect Lock-Token response header for LOCK. Fixes Office
+  2010 compatibility.
+* Added: Issue 35: SabreDAV version to header to OPTIONS response to ease
+  debugging.
+* Fixed: Issue 36: Incorrect variable name, throwing error in some requests.
+* Fixed: Issue 37: Incorrect smultron regex in temporary filefilter.
+* Fixed: Issue 33: Converting ISO-8859-1 characters to UTF-8.
+* Fixed: Issue 39 & Issue 40: Basename fails on non-utf-8 locales.
+* Added: More unittests.
+* Added: SabreDAV version to all error responses.
+* Added: URLUtil class for decoding urls.
+* Changed: Now using pear.sabredav.org pear channel.
+* Changed: Sabre_DAV_Server::getCopyAndMoveInfo is now a public method.
+
+
+1.1.2-alpha (2010-03-18)
+------------------------
+
+* Added: RFC5397 - current-user-principal support.
+* Fixed: Issue 27: encoding entities in property responses.
+* Added: naturalselection script now allows the user to specify a 'minimum
+  number of bytes' for deletion. This should reduce load due to less crawling
+* Added: Full support for the calendar-query report.
+* Added: More unittests.
+* Added: Support for complex property deserialization through the static
+  ::unserialize() method.
+* Added: Support for modifying calendar-component-set
+* Fixed: Issue 29: Added TIMEOUT_INFINITE constant
+
+
+1.1.1-alpha (2010-03-11)
+------------------------
+
+* Added: RFC5689 - Extended MKCOL support.
+* Fixed: Evolution support for CalDAV.
+* Fixed: PDO-locks backend was pretty much completely broken. This is 100%
+  unittested now.
+* Added: support for ctags.
+* Fixed: Comma's between HTTP methods in 'Allow' method.
+* Changed: default argument for Sabre_DAV_Locks_Backend_FS. This means a
+  datadirectory must always be specified from now on.
+* Changed: Moved Sabre_DAV_Server::parseProps to
+  Sabre_DAV_XMLUtil::parseProperties.
+* Changed: Sabre_DAV_IDirectory is now Sabre_DAV_ICollection.
+* Changed: Sabre_DAV_Exception_PermissionDenied is now
+  Sabre_DAV_Exception_Forbidden.
+* Changed: Sabre_CalDAV_ICalendarCollection is removed.
+* Added: Sabre_DAV_IExtendedCollection.
+* Added: Many more unittests.
+* Added: support for calendar-timezone property.
+
+
+1.1.0-alpha (2010-03-01)
+------------------------
+
+* Note: This version is forked from version 1.0.5, so release dates may be out
+  of order.
+* Added: CalDAV - RFC 4791
+* Removed: Sabre_PHP_Exception. PHP has a built-in ErrorException for this.
+* Added: PDO authentication backend.
+* Added: Example sql for auth, caldav, locks for sqlite.
+* Added: Sabre_DAV_Browser_GuessContentType plugin
+* Changed: Authentication plugin refactored, making it possible to implement
+  non-digest authentication.
+* Fixed: Better error display in browser plugin.
+* Added: Support for {DAV:}supported-report-set
+* Added: XML utility class with helper functions for the WebDAV protocol.
+* Added: Tons of unittests
+* Added: PrincipalCollection and Principal classes
+* Added: Sabre_DAV_Server::getProperties for easy property retrieval
+* Changed: {DAV:}resourceType defaults to 0
+* Changed: Any non-null resourceType now gets a / appended to the href value.
+  Before this was just for {DAV:}collection's, but this is now also the case for
+  for example {DAV:}principal.
+* Changed: The Href property class can now optionally create non-relative uri's.
+* Changed: Sabre_HTTP_Response now returns false if headers are already sent and
+  header-methods are called.
+* Fixed: Issue 19: HEAD requests on Collections
+* Fixed: Issue 21: Typo in Sabre_DAV_Property_Response
+* Fixed: Issue 18: Doesn't work with Evolution Contacts
+
+
+1.0.15 (2010-05-28)
+-------------------
+
+* Added: Issue 31: Hiding exception information by default. Can be turned on
+  with the Sabre_DAV_Server::$debugExceptions property.
+* Added: Moved autoload from lib/ to lib/Sabre/autoload.php. This is also the
+  case in the upcoming 1.2.0, so it will improve future compatibility.
+
+
+1.0.14 (2010-04-15)
+-------------------
+
+* Fixed: double namespace declaration in multistatus responses.
+
+
+1.0.13 (2010-03-30)
+-------------------
+
+* Fixed: Issue 40: Last references to basename/dirname
+
+
+1.0.12 (2010-03-30)
+-------------------
+
+* Fixed: Issue 37: Incorrect smultron regex in temporary filefilter.
+* Fixed: Issue 26: Workaround for broken GVFS behaviour with encoded special
+  characters.
+* Fixed: Issue 33: Converting ISO-8859-1 characters to UTF-8.
+* Fixed: Issue 39: Basename fails on non-utf-8 locales.
+* Added: More unittests.
+* Added: SabreDAV version to all error responses.
+* Added: URLUtil class for decoding urls.
+* Updated: Now using pear.sabredav.org pear channel.
+
+
+1.0.11 (2010-03-23)
+-------------------
+
+* Non-public release. This release is identical to 1.0.10, but it is used to
+  test releasing packages to pear.sabredav.org.
+
+
+1.0.10 (2010-03-22)
+-------------------
+
+* Fixed: Issue 34: Invalid Lock-Token header response.
+* Added: Issue 35: Addign SabreDAV version to HTTP OPTIONS responses.
+
+
+1.0.9 (2010-03-19)
+------------------
+
+* Fixed: Issue 27: Entities not being encoded in PROPFIND responses.
+* Fixed: Issue 29: Added missing TIMEOUT_INFINITE constant.
+
+
+1.0.8 (2010-03-03)
+------------------
+
+* Fixed: Issue 21: typos causing errors
+* Fixed: Issue 23: Comma's between methods in Allow header.
+* Added: Sabre_DAV_ICollection interface, to aid in future compatibility.
+* Added: Sabre_DAV_Exception_Forbidden exception. This will replace
+  Sabre_DAV_Exception_PermissionDenied in the future, and can already be used to
+  ensure future compatibility.
+
+
+1.0.7 (2010-02-24)
+------------------
+
+* Fixed: Issue 19 regression for MS Office
+
+
+1.0.6 (2010-02-23)
+------------------
+
+* Fixed: Issue 19: HEAD requests on Collections
+
+
+1.0.5 (2010-01-22)
+------------------
+
+* Fixed: Fatal error when a malformed url was used for unlocking, in conjuction
+  with Sabre.autoload.php due to a incorrect filename.
+* Fixed: Improved unittests and build system
+
+
+1.0.4 (2010-01-11)
+------------------
+
+* Fixed: needed 2 different releases. One for googlecode and one for pearfarm.
+  This is to retain the old method to install SabreDAV until pearfarm becomes
+  the standard installation method.
+
+
+1.0.3 (2010-01-11)
+------------------
+
+* Added: RFC4709 support (davmount)
+* Added: 6 unittests
+* Added: naturalselection. A tool to keep cache directories below a specified
+  theshold.
+* Changed: Now using pearfarm.org channel server.
+
+
+1.0.1 (2009-12-22)
+------------------
+
+* Fixed: Issue 15: typos in examples
+* Fixed: Minor pear installation issues
+
+
+1.0.0 (2009-11-02)
+------------------
+
+* Added: SimpleDirectory class. This class allows creating static directory
+  structures with ease.
+* Changed: Custom complex properties and exceptions now get an instance of
+  Sabre_DAV_Server as their first argument in serialize()
+* Changed: Href complex property now prepends server's baseUri
+* Changed: delete before an overwriting copy/move is now handles by server class
+  instead of tree classes
+* Changed: events must now explicitly return false to stop execution. Before,
+  execution would be stopped by anything loosely evaluating to false.
+* Changed: the getPropertiesForPath method now takes a different set of
+  arguments, and returns a different response. This allows plugin developers to
+  return statuses for properties other than 200 and 404. The hrefs are now also
+  always calculated relative to the baseUri, and not the uri of the request.
+* Changed: generatePropFindResponse is renamed to generateMultiStatus, and now
+  takes a list of properties similar to the response of getPropertiesForPath.
+  This was also needed to improve flexibility for plugin development.
+* Changed: Auth plugins are no longer included. They were not yet stable
+  quality, so they will probably be reintroduced in a later version.
+* Changed: PROPPATCH also used generateMultiStatus now.
+* Removed: unknownProperties event. This is replaced by the afterGetProperties
+  event, which should provide more flexibility.
+* Fixed: Only calling getSize() on IFile instances in httpHead()
+* Added: beforeBind event. This is invoked upon file or directory creation
+* Added: beforeWriteContent event, this is invoked by PUT and LOCK on an
+  existing resource.
+* Added: beforeUnbind event. This is invoked right before deletion of any
+  resource.
+* Added: afterGetProperties event. This event can be used to make modifications
+  to property responses.
+* Added: beforeLock and beforeUnlock events.
+* Added: afterBind event.
+* Fixed: Copy and Move could fail in the root directory. This is now fixed.
+* Added: Plugins can now be retrieved by their classname. This is useful for
+  inter-plugin communication.
+* Added: The Auth backend can now return usernames and user-id's.
+* Added: The Auth backend got a getUsers method
+* Added: Sabre_DAV_FSExt_Directory now returns quota info
+
+
+0.12.1-beta (2009-09-11)
+------------------------
+
+* Fixed: UNLOCK bug. Unlock didn't work at all
+
+
+0.12-beta (2009-09-10)
+----------------------
+
+* Updated: Browser plugin now shows multiple {DAV:}resourcetype values if
+  available.
+* Added: Experimental PDO backend for Locks Manager
+* Fixed: Sending Content-Length: 0 for every empty response. This improves NGinx
+  compatibility.
+* Fixed: Last modification time is reported in UTC timezone. This improves
+  Finder compatibility.
+
+
+0.11-beta (2009-08-11)
+----------------------
+
+* Updated: Now in Beta
+* Updated: Pear package no longer includes docs/ directory. These just contained
+  rfc's, which are publicly available. This reduces the package from ~800k to
+  ~60k
+* Added: generatePropfindResponse now takes a baseUri argument
+* Added: ResourceType property can now contain multiple resourcetypes.
+* Fixed: Issue 13.
+
+
+0.10-alpha (2009-08-03)
+-----------------------
+
+* Added: Plugin to automatically map GET requests to non-files to PROPFIND
+  (Sabre_DAV_Browser_MapGetToPropFind). This should allow easier debugging of
+  complicated WebDAV setups.
+* Added: Sabre_DAV_Property_Href class. For future use.
+* Added: Ability to choose to use auth-int, auth or both for HTTP Digest
+  authentication. (Issue 11)
+* Changed: Made more methods in Sabre_DAV_Server public.
+* Fixed: TemporaryFileFilter plugin now intercepts HTTP LOCK requests to
+  non-existent files. (Issue 12)
+* Added: Central list of defined xml namespace prefixes. This can reduce
+  Bandwidth and legibility for xml bodies with user-defined namespaces.
+* Added: now a PEAR-compatible package again, thanks to Michael Gauthier
+* Changed: moved default copy and move logic from ObjectTree to Tree class
+
+0.9a-alpha (2009-07-21)
+----------------------
+
+* Fixed: Broken release
+
+0.9-alpha (2009-07-21)
+----------------------
+
+* Changed: Major refactoring, removed most of the logic from the Tree objects.
+  The Server class now directly works with the INode, IFile and IDirectory
+  objects. If you created your own Tree objects, this will most likely break in
+  this release.
+* Changed: Moved all the Locking logic from the Tree and Server classes into a
+  separate plugin.
+* Changed: TemporaryFileFilter is now a plugin.
+* Added: Comes with an autoloader script. This can be used instead of the
+  includer script, and is preferred by some people.
+* Added: AWS Authentication class.
+* Added: simpleserversetup.py script. This will quickly get a fileserver up and
+  running.
+* Added: When subscribing to events, it is now possible to supply a priority.
+  This is for example needed to ensure that the Authentication Plugin is used
+  before any other Plugin.
+* Added: 22 new tests.
+* Added: Users-manager plugin for .htdigest files. Experimental and subject to
+  change.
+* Added: RFC 2324 HTTP 418 status code
+* Fixed: Exclusive locks could in some cases be picked up as shared locks
+* Fixed: Digest auth for non-apache servers had a bug (still not actually tested
+  this well).
+
+
+0.8-alpha (2009-05-30)
+----------------------
+
+* Changed: Renamed all exceptions! This is a compatibility break. Every
+  Exception now follows Sabre_DAV_Exception_FileNotFound convention instead of
+  Sabre_DAV_FileNotFoundException.
+* Added: Browser plugin now allows uploading and creating directories straight
+  from the browser.
+* Added: 12 more unittests
+* Fixed: Locking bug, which became prevalent on Windows Vista.
+* Fixed: Netdrive support
+* Fixed: TemporaryFileFilter filtered out too many files. Fixed some of the
+  regexes.
+* Fixed: Added README and ChangeLog to package
+
+
+0.7-alpha (2009-03-29)
+----------------------
+
+* Added: System to return complex properties from PROPFIND.
+* Added: support for {DAV:}supportedlock.
+* Added: support for {DAV:}lockdiscovery.
+* Added: 6 new tests.
+* Added: New plugin system.
+* Added: Simple HTML directory plugin, for browser access.
+* Added: Server class now sends back standard pre-condition error xml bodies.
+  This was new since RFC4918.
+* Added: Sabre_DAV_Tree_Aggregrate, which can 'host' multiple Tree objects into
+  one.
+* Added: simple basis for HTTP REPORT method. This method is not used yet, but
+  can be used by plugins to add reports.
+* Changed: ->getSize is only called for files, no longer for collections. r303
+* Changed: Sabre_DAV_FilterTree is now Sabre_DAV_Tree_Filter
+* Changed: Sabre_DAV_TemporaryFileFilter is now called
+  Sabre_DAV_Tree_TemporaryFileFilter.
+* Changed: removed functions (get(/set)HTTPRequest(/Response)) from Server
+  class, and using a public property instead.
+* Fixed: bug related to parsing proppatch and propfind requests. Didn't show up
+  in most clients, but it needed fixing regardless. (r255)
+* Fixed: auth-int is now properly supported within HTTP Digest.
+* Fixed: Using application/xml for a mimetype vs. text/xml as per RFC4918 sec
+  8.2.
+* Fixed: TemporaryFileFilter now lets through GET's if they actually exist on
+  the backend. (r274)
+* FIxed: Some methods didn't get passed through in the FilterTree (r283).
+* Fixed: LockManager is now slightly more complex, Tree classes slightly less.
+  (r287)
+
+
+0.6-alpha (2009-02-16)
+----------------------
+
+* Added: Now uses streams for files, instead of strings. This means it won't
+  require to hold entire files in memory, which can be an issue if you're
+  dealing with big files. Note that this breaks compatibility for put() and
+  createFile methods.
+* Added: HTTP Digest Authentication helper class.
+* Added: Support for HTTP Range header
+* Added: Support for ETags within If: headers
+* Added: The API can now return ETags and override the default Content-Type
+* Added: starting with basic framework for unittesting, using PHPUnit.
+* Added: 49 unittests.
+* Added: Abstraction for the HTTP request.
+* Updated: Using Clark Notation for tags in properties. This means tags are
+  serialized as {namespace}tagName instead of namespace#tagName
+* Fixed: HTTP_BasicAuth class now works as expected.
+* Fixed: DAV_Server uses / for a default baseUrl.
+* Fixed: Last modification date is no longer ignored in PROPFIND.
+* Fixed: PROPFIND now sends back information about the requestUri even when
+  "Depth: 1" is specified.
+
+
+0.5-alpha (2009-01-14)
+----------------------
+
+* Added: Added a very simple example for implementing a mapping to PHP file
+  streams. This should allow easy implementation of for example a WebDAV to FTP
+  proxy.
+* Added: HTTP Basic Authentication helper class.
+* Added: Sabre_HTTP_Response class. This centralizes HTTP operations and will be
+  a start towards the creating of a testing framework.
+* Updated: Backwards compatibility break: all require_once() statements are
+  removed from all the files. It is now recommended to use autoloading of
+  classes, or just including lib/Sabre.includes.php. This fix was made to allow
+  easier integration into applications not using this standard inclusion model.
+* Updated: Better in-file documentation.
+* Updated: Sabre_DAV_Tree can now work with Sabre_DAV_LockManager.
+* Updated: Fixes a shared-lock bug.
+* Updated: Removed ?> from the bottom of each php file.
+* Updated: Split up some operations from Sabre_DAV_Server to
+  Sabre_HTTP_Response.
+* Fixed: examples are now actually included in the pear package.
+
+
+0.4-alpha (2008-11-05)
+----------------------
+
+* Passes all litmus tests!
+* Added: more examples
+* Added: Custom property support
+* Added: Shared lock support
+* Added: Depth support to locks
+* Added: Locking on unmapped urls (non-existent nodes)
+* Fixed: Advertising as WebDAV class 3 support
+
+
+0.3-alpha (2008-06-29)
+----------------------
+
+* Fully working in MS Windows clients.
+* Added: temporary file filter: support for smultron files.
+* Added: Phing build scripts
+* Added: PEAR package
+* Fixed: MOVE bug identified using finder.
+* Fixed: Using gzuncompress instead of gzdecode in the temporary file filter.
+  This seems more common.
+
+
+0.2-alpha (2008-05-27)
+----------------------
+
+* Somewhat working in Windows clients
+* Added: Working PROPPATCH method (doesn't support custom properties yet)
+* Added: Temporary filename handling system
+* Added: Sabre_DAV_IQuota to return quota information
+* Added: PROPFIND now reads the request body and only supplies the requested
+  properties
+
+
+0.1-alpha (2008-04-04)
+----------------------
+
+* First release!
+* Passes litmus: basic, http and copymove test.
+* Fully working in Finder and DavFS2.
+
+Project started: 2007-12-13
+
+[vobj]: http://sabre.io/vobject/
+[evnt]: http://sabre.io/event/
+[http]: http://sabre.io/http/
+[uri]: http://sabre.io/uri/
+[xml]: http://sabre.io/xml/
+[mi20]: http://sabre.io/dav/upgrade/1.8-to-2.0/
+[rfc6638]: http://tools.ietf.org/html/rfc6638 "CalDAV Scheduling"
+[rfc7240]: http://tools.ietf.org/html/rfc7240
+[calendar-availability]: https://tools.ietf.org/html/draft-daboo-calendar-availability-05
diff --git a/vendor/LICENSE b/vendor/LICENSE
new file mode 100644
index 000000000..fd3539e33
--- /dev/null
+++ b/vendor/LICENSE
@@ -0,0 +1,27 @@
+Copyright (C) 2007-2016 fruux GmbH (https://fruux.com/).
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+    * Neither the name of SabreDAV nor the names of its contributors
+      may be used to endorse or promote products derived from this software
+      without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+    POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/README.md b/vendor/README.md
new file mode 100644
index 000000000..8edcd4073
--- /dev/null
+++ b/vendor/README.md
@@ -0,0 +1,36 @@
+![sabre's logo](http://sabre.io/img/logo.png) sabre/dav
+=======================================================
+
+Introduction
+------------
+
+sabre/dav is the most popular WebDAV framework for PHP. Use it to create WebDAV, CalDAV and CardDAV servers.
+
+Full documentation can be found on the website:
+
+http://sabre.io/
+
+Build status
+------------
+
+| branch       | status | minimum PHP version |
+| ------------ | ------ | ------------------- |
+| master       | [![Build Status](https://travis-ci.org/fruux/sabre-dav.svg?branch=master)](https://travis-ci.org/fruux/sabre-dav) | PHP 5.5 |
+| 3.1          | [![Build Status](https://travis-ci.org/fruux/sabre-dav.svg?branch=3.0)](https://travis-ci.org/fruux/sabre-dav) | PHP 5.5 |
+| 3.0          | [![Build Status](https://travis-ci.org/fruux/sabre-dav.svg?branch=3.0)](https://travis-ci.org/fruux/sabre-dav) | PHP 5.4 |
+| 2.1          | [![Build Status](https://travis-ci.org/fruux/sabre-dav.svg?branch=2.1)](https://travis-ci.org/fruux/sabre-dav) | PHP 5.4 |
+| 2.0          | [![Build Status](https://travis-ci.org/fruux/sabre-dav.svg?branch=2.0)](https://travis-ci.org/fruux/sabre-dav) | PHP 5.4 |
+| 1.8          | [![Build Status](https://travis-ci.org/fruux/sabre-dav.svg?branch=1.8)](https://travis-ci.org/fruux/sabre-dav) | PHP 5.3 |
+| 1.7          | [![Build Status](https://travis-ci.org/fruux/sabre-dav.svg?branch=1.7)](https://travis-ci.org/fruux/sabre-dav) | PHP 5.3 |
+| 1.6          | [![Build Status](https://travis-ci.org/fruux/sabre-dav.svg?branch=1.6)](https://travis-ci.org/fruux/sabre-dav) | PHP 5.3 |
+
+Documentation
+-------------
+
+* [Introduction](http://sabre.io/dav/).
+* [Installation](http://sabre.io/dav/install/).
+
+Made at fruux
+-------------
+
+SabreDAV is being developed by [fruux](https://fruux.com/). Drop us a line for commercial services or enterprise support.
diff --git a/vendor/sabre/dav/examples/addressbookserver.php b/vendor/examples/addressbookserver.php
index 6d1c9b26c..6d1c9b26c 100644
--- a/vendor/sabre/dav/examples/addressbookserver.php
+++ b/vendor/examples/addressbookserver.php
diff --git a/vendor/examples/calendarserver.php b/vendor/examples/calendarserver.php
new file mode 100644
index 000000000..e5f9f3387
--- /dev/null
+++ b/vendor/examples/calendarserver.php
@@ -0,0 +1,76 @@
+<?php
+
+/*
+
+CalendarServer example
+
+This server features CalDAV support
+
+*/
+
+// settings
+date_default_timezone_set('Canada/Eastern');
+
+// If you want to run the SabreDAV server in a custom location (using mod_rewrite for instance)
+// You can override the baseUri here.
+// $baseUri = '/';
+
+/* Database */
+$pdo = new PDO('sqlite:data/db.sqlite');
+$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+
+//Mapping PHP errors to exceptions
+function exception_error_handler($errno, $errstr, $errfile, $errline) {
+    throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
+}
+set_error_handler("exception_error_handler");
+
+// Files we need
+require_once 'vendor/autoload.php';
+
+// Backends
+$authBackend = new Sabre\DAV\Auth\Backend\PDO($pdo);
+$calendarBackend = new Sabre\CalDAV\Backend\PDO($pdo);
+$principalBackend = new Sabre\DAVACL\PrincipalBackend\PDO($pdo);
+
+// Directory structure
+$tree = [
+    new Sabre\CalDAV\Principal\Collection($principalBackend),
+    new Sabre\CalDAV\CalendarRoot($principalBackend, $calendarBackend),
+];
+
+$server = new Sabre\DAV\Server($tree);
+
+if (isset($baseUri))
+    $server->setBaseUri($baseUri);
+
+/* Server Plugins */
+$authPlugin = new Sabre\DAV\Auth\Plugin($authBackend);
+$server->addPlugin($authPlugin);
+
+$aclPlugin = new Sabre\DAVACL\Plugin();
+$server->addPlugin($aclPlugin);
+
+/* CalDAV support */
+$caldavPlugin = new Sabre\CalDAV\Plugin();
+$server->addPlugin($caldavPlugin);
+
+/* Calendar subscription support */
+$server->addPlugin(
+    new Sabre\CalDAV\Subscriptions\Plugin()
+);
+
+/* Calendar scheduling support */
+$server->addPlugin(
+    new Sabre\CalDAV\Schedule\Plugin()
+);
+
+/* WebDAV-Sync plugin */
+$server->addPlugin(new Sabre\DAV\Sync\Plugin());
+
+// Support for html frontend
+$browser = new Sabre\DAV\Browser\Plugin();
+$server->addPlugin($browser);
+
+// And off we go!
+$server->exec();
diff --git a/vendor/examples/fileserver.php b/vendor/examples/fileserver.php
new file mode 100644
index 000000000..59a453f63
--- /dev/null
+++ b/vendor/examples/fileserver.php
@@ -0,0 +1,56 @@
+<?php
+
+/*
+
+This is the best starting point if you're just interested in setting up a fileserver.
+
+Make sure that the 'public' and 'tmpdata' exists, with write permissions
+for your server.
+
+*/
+
+// settings
+date_default_timezone_set('Canada/Eastern');
+$publicDir = 'public';
+$tmpDir = 'tmpdata';
+
+// If you want to run the SabreDAV server in a custom location (using mod_rewrite for instance)
+// You can override the baseUri here.
+// $baseUri = '/';
+
+
+// Files we need
+require_once 'vendor/autoload.php';
+
+// Create the root node
+$root = new \Sabre\DAV\FS\Directory($publicDir);
+
+// The rootnode needs in turn to be passed to the server class
+$server = new \Sabre\DAV\Server($root);
+
+if (isset($baseUri))
+    $server->setBaseUri($baseUri);
+
+// Support for LOCK and UNLOCK
+$lockBackend = new \Sabre\DAV\Locks\Backend\File($tmpDir . '/locksdb');
+$lockPlugin = new \Sabre\DAV\Locks\Plugin($lockBackend);
+$server->addPlugin($lockPlugin);
+
+// Support for html frontend
+$browser = new \Sabre\DAV\Browser\Plugin();
+$server->addPlugin($browser);
+
+// Automatically guess (some) contenttypes, based on extesion
+$server->addPlugin(new \Sabre\DAV\Browser\GuessContentType());
+
+// Authentication backend
+$authBackend = new \Sabre\DAV\Auth\Backend\File('.htdigest');
+$auth = new \Sabre\DAV\Auth\Plugin($authBackend);
+$server->addPlugin($auth);
+
+// Temporary file filter
+$tempFF = new \Sabre\DAV\TemporaryFileFilterPlugin($tmpDir);
+$server->addPlugin($tempFF);
+
+// And off we go!
+$server->exec();
diff --git a/vendor/examples/groupwareserver.php b/vendor/examples/groupwareserver.php
new file mode 100644
index 000000000..40c1844da
--- /dev/null
+++ b/vendor/examples/groupwareserver.php
@@ -0,0 +1,101 @@
+<?php
+
+/**
+ * This server combines both CardDAV and CalDAV functionality into a single
+ * server. It is assumed that the server runs at the root of a HTTP domain (be
+ * that a domainname-based vhost or a specific TCP port.
+ *
+ * This example also assumes that you're using SQLite and the database has
+ * already been setup (along with the database tables).
+ *
+ * You may choose to use MySQL instead, just change the PDO connection
+ * statement.
+ */
+
+/**
+ * UTC or GMT is easy to work with, and usually recommended for any
+ * application.
+ */
+date_default_timezone_set('UTC');
+
+/**
+ * Make sure this setting is turned on and reflect the root url for your WebDAV
+ * server.
+ *
+ * This can be for example the root / or a complete path to your server script.
+ */
+// $baseUri = '/';
+
+/**
+ * Database
+ *
+ * Feel free to switch this to MySQL, it will definitely be better for higher
+ * concurrency.
+ */
+$pdo = new \PDO('sqlite:data/db.sqlite');
+$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+
+/**
+ * Mapping PHP errors to exceptions.
+ *
+ * While this is not strictly needed, it makes a lot of sense to do so. If an
+ * E_NOTICE or anything appears in your code, this allows SabreDAV to intercept
+ * the issue and send a proper response back to the client (HTTP/1.1 500).
+ */
+function exception_error_handler($errno, $errstr, $errfile, $errline) {
+    throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
+}
+set_error_handler("exception_error_handler");
+
+// Autoloader
+require_once 'vendor/autoload.php';
+
+/**
+ * The backends. Yes we do really need all of them.
+ *
+ * This allows any developer to subclass just any of them and hook into their
+ * own backend systems.
+ */
+$authBackend      = new \Sabre\DAV\Auth\Backend\PDO($pdo);
+$principalBackend = new \Sabre\DAVACL\PrincipalBackend\PDO($pdo);
+$carddavBackend   = new \Sabre\CardDAV\Backend\PDO($pdo);
+$caldavBackend    = new \Sabre\CalDAV\Backend\PDO($pdo);
+
+/**
+ * The directory tree
+ *
+ * Basically this is an array which contains the 'top-level' directories in the
+ * WebDAV server.
+ */
+$nodes = [
+    // /principals
+    new \Sabre\CalDAV\Principal\Collection($principalBackend),
+    // /calendars
+    new \Sabre\CalDAV\CalendarRoot($principalBackend, $caldavBackend),
+    // /addressbook
+    new \Sabre\CardDAV\AddressBookRoot($principalBackend, $carddavBackend),
+];
+
+// The object tree needs in turn to be passed to the server class
+$server = new \Sabre\DAV\Server($nodes);
+if (isset($baseUri)) $server->setBaseUri($baseUri);
+
+// Plugins
+$server->addPlugin(new \Sabre\DAV\Auth\Plugin($authBackend));
+$server->addPlugin(new \Sabre\DAV\Browser\Plugin());
+$server->addPlugin(new \Sabre\DAV\Sync\Plugin());
+$server->addPlugin(new \Sabre\DAV\Sharing\Plugin());
+$server->addPlugin(new \Sabre\DAVACL\Plugin());
+
+// CalDAV plugins
+$server->addPlugin(new \Sabre\CalDAV\Plugin());
+$server->addPlugin(new \Sabre\CalDAV\Schedule\Plugin());
+$server->addPlugin(new \Sabre\CalDAV\SharingPlugin());
+$server->addPlugin(new \Sabre\CalDAV\ICSExportPlugin());
+
+// CardDAV plugins
+$server->addPlugin(new \Sabre\CardDAV\Plugin());
+$server->addPlugin(new \Sabre\CardDAV\VCFExportPlugin());
+
+// And off we go!
+$server->exec();
diff --git a/vendor/examples/minimal.php b/vendor/examples/minimal.php
new file mode 100644
index 000000000..4ac256064
--- /dev/null
+++ b/vendor/examples/minimal.php
@@ -0,0 +1,20 @@
+<?php
+
+/**
+ * This example shows the smallest possible sabre/dav server.
+ */
+include 'vendor/autoload.php';
+
+$server = new Sabre\DAV\Server([
+    new Sabre\DAV\FS\Directory(__DIR__)
+]);
+
+/**
+ * Ok. Perhaps not the smallest possible. The browser plugin is 100% optional,
+ * but it really helps understanding the server.
+ */
+$server->addPlugin(
+    new Sabre\DAV\Browser\Plugin()
+);
+
+$server->exec();
diff --git a/vendor/sabre/dav/examples/sql/mysql.addressbook.sql b/vendor/examples/sql/mysql.addressbooks.sql
index 5ec8428a7..9ec88babe 100644
--- a/vendor/sabre/dav/examples/sql/mysql.addressbook.sql
+++ b/vendor/examples/sql/mysql.addressbooks.sql
@@ -6,7 +6,7 @@ CREATE TABLE addressbooks (
     description TEXT,
     synctoken INT(11) UNSIGNED NOT NULL DEFAULT '1',
     UNIQUE(principaluri(100), uri(100))
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
 CREATE TABLE cards (
     id INT(11) UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
@@ -16,7 +16,7 @@ CREATE TABLE cards (
     lastmodified INT(11) UNSIGNED,
     etag VARBINARY(32),
     size INT(11) UNSIGNED NOT NULL
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
 CREATE TABLE addressbookchanges (
     id INT(11) UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
@@ -25,4 +25,4 @@ CREATE TABLE addressbookchanges (
     addressbookid INT(11) UNSIGNED NOT NULL,
     operation TINYINT(1) NOT NULL,
     INDEX addressbookid_synctoken (addressbookid, synctoken)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
diff --git a/vendor/sabre/dav/examples/sql/mysql.calendars.sql b/vendor/examples/sql/mysql.calendars.sql
index 21c5bcb44..21c5bcb44 100644
--- a/vendor/sabre/dav/examples/sql/mysql.calendars.sql
+++ b/vendor/examples/sql/mysql.calendars.sql
diff --git a/vendor/sabre/dav/examples/sql/mysql.locks.sql b/vendor/examples/sql/mysql.locks.sql
index 96a3a88d9..96a3a88d9 100644
--- a/vendor/sabre/dav/examples/sql/mysql.locks.sql
+++ b/vendor/examples/sql/mysql.locks.sql
diff --git a/vendor/sabre/dav/examples/sql/mysql.principals.sql b/vendor/examples/sql/mysql.principals.sql
index ea0d16a27..ea0d16a27 100644
--- a/vendor/sabre/dav/examples/sql/mysql.principals.sql
+++ b/vendor/examples/sql/mysql.principals.sql
diff --git a/vendor/examples/sql/mysql.propertystorage.sql b/vendor/examples/sql/mysql.propertystorage.sql
new file mode 100644
index 000000000..1b5ca5ac6
--- /dev/null
+++ b/vendor/examples/sql/mysql.propertystorage.sql
@@ -0,0 +1,9 @@
+CREATE TABLE propertystorage (
+    id INT UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
+    path VARBINARY(1024) NOT NULL,
+    name VARBINARY(100) NOT NULL,
+    valuetype INT UNSIGNED,
+    value MEDIUMBLOB
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+CREATE UNIQUE INDEX path_property ON propertystorage (path(600), name(100));
diff --git a/vendor/sabre/dav/examples/sql/mysql.users.sql b/vendor/examples/sql/mysql.users.sql
index 22ac312d5..22ac312d5 100644
--- a/vendor/sabre/dav/examples/sql/mysql.users.sql
+++ b/vendor/examples/sql/mysql.users.sql
diff --git a/vendor/sabre/dav/examples/sql/pgsql.addressbook.sql b/vendor/examples/sql/pgsql.addressbooks.sql
index ef2cc5b9a..98f414f42 100644
--- a/vendor/sabre/dav/examples/sql/pgsql.addressbook.sql
+++ b/vendor/examples/sql/pgsql.addressbooks.sql
@@ -16,7 +16,7 @@ CREATE UNIQUE INDEX addressbooks_ukey
 CREATE TABLE cards (
     id SERIAL NOT NULL,
     addressbookid INTEGER NOT NULL,
-    carddata TEXT,
+    carddata BYTEA,
     uri VARCHAR(200),
     lastmodified INTEGER,
     etag VARCHAR(32),
@@ -29,10 +29,6 @@ ALTER TABLE ONLY cards
 CREATE UNIQUE INDEX cards_ukey
     ON cards USING btree (addressbookid, uri);
 
-ALTER TABLE ONLY cards
-    ADD CONSTRAINT cards_addressbookid_fkey FOREIGN KEY (addressbookid) REFERENCES addressbooks(id)
-        ON DELETE CASCADE;
-
 CREATE TABLE addressbookchanges (
     id SERIAL NOT NULL,
     uri VARCHAR(200) NOT NULL,
@@ -46,7 +42,3 @@ ALTER TABLE ONLY addressbookchanges
 
 CREATE INDEX addressbookchanges_addressbookid_synctoken_ix
     ON addressbookchanges USING btree (addressbookid, synctoken);
-
-ALTER TABLE ONLY addressbookchanges
-    ADD CONSTRAINT addressbookchanges_addressbookid_fkey FOREIGN KEY (addressbookid) REFERENCES addressbooks(id)
-        ON DELETE CASCADE;
diff --git a/vendor/sabre/dav/examples/sql/pgsql.calendars.sql b/vendor/examples/sql/pgsql.calendars.sql
index 67dc41a5a..67dc41a5a 100644
--- a/vendor/sabre/dav/examples/sql/pgsql.calendars.sql
+++ b/vendor/examples/sql/pgsql.calendars.sql
diff --git a/vendor/sabre/dav/examples/sql/pgsql.locks.sql b/vendor/examples/sql/pgsql.locks.sql
index 0290528ce..0290528ce 100644
--- a/vendor/sabre/dav/examples/sql/pgsql.locks.sql
+++ b/vendor/examples/sql/pgsql.locks.sql
diff --git a/vendor/sabre/dav/examples/sql/pgsql.principals.sql b/vendor/examples/sql/pgsql.principals.sql
index 5a65260a2..5a65260a2 100644
--- a/vendor/sabre/dav/examples/sql/pgsql.principals.sql
+++ b/vendor/examples/sql/pgsql.principals.sql
diff --git a/vendor/examples/sql/pgsql.propertystorage.sql b/vendor/examples/sql/pgsql.propertystorage.sql
new file mode 100644
index 000000000..d1463faae
--- /dev/null
+++ b/vendor/examples/sql/pgsql.propertystorage.sql
@@ -0,0 +1,13 @@
+CREATE TABLE propertystorage (
+    id SERIAL NOT NULL,
+    path VARCHAR(1024) NOT NULL,
+    name VARCHAR(100) NOT NULL,
+    valuetype INT,
+    value BYTEA
+);
+
+ALTER TABLE ONLY propertystorage
+    ADD CONSTRAINT propertystorage_pkey PRIMARY KEY (id);
+
+CREATE UNIQUE INDEX propertystorage_ukey
+    ON propertystorage (path, name);
diff --git a/vendor/sabre/dav/examples/sql/pgsql.users.sql b/vendor/examples/sql/pgsql.users.sql
index 9d6047b8c..9d6047b8c 100644
--- a/vendor/sabre/dav/examples/sql/pgsql.users.sql
+++ b/vendor/examples/sql/pgsql.users.sql
diff --git a/vendor/sabre/dav/examples/sql/sqlite.addressbooks.sql b/vendor/examples/sql/sqlite.addressbooks.sql
index 0baed8bfb..0baed8bfb 100644
--- a/vendor/sabre/dav/examples/sql/sqlite.addressbooks.sql
+++ b/vendor/examples/sql/sqlite.addressbooks.sql
diff --git a/vendor/sabre/dav/examples/sql/sqlite.calendars.sql b/vendor/examples/sql/sqlite.calendars.sql
index 1c8070496..1c8070496 100644
--- a/vendor/sabre/dav/examples/sql/sqlite.calendars.sql
+++ b/vendor/examples/sql/sqlite.calendars.sql
diff --git a/vendor/sabre/dav/examples/sql/sqlite.locks.sql b/vendor/examples/sql/sqlite.locks.sql
index 622baea42..622baea42 100644
--- a/vendor/sabre/dav/examples/sql/sqlite.locks.sql
+++ b/vendor/examples/sql/sqlite.locks.sql
diff --git a/vendor/sabre/dav/examples/sql/sqlite.principals.sql b/vendor/examples/sql/sqlite.principals.sql
index 4105156f8..4105156f8 100644
--- a/vendor/sabre/dav/examples/sql/sqlite.principals.sql
+++ b/vendor/examples/sql/sqlite.principals.sql
diff --git a/vendor/examples/sql/sqlite.propertystorage.sql b/vendor/examples/sql/sqlite.propertystorage.sql
new file mode 100644
index 000000000..72e860ce3
--- /dev/null
+++ b/vendor/examples/sql/sqlite.propertystorage.sql
@@ -0,0 +1,10 @@
+CREATE TABLE propertystorage (
+    id integer primary key asc NOT NULL,
+    path text NOT NULL,
+    name text NOT NULL,
+    valuetype integer NOT NULL,
+    value string
+);
+
+
+CREATE UNIQUE INDEX path_property ON propertystorage (path, name);
diff --git a/vendor/sabre/dav/examples/sql/sqlite.users.sql b/vendor/examples/sql/sqlite.users.sql
index 5597b058a..5597b058a 100644
--- a/vendor/sabre/dav/examples/sql/sqlite.users.sql
+++ b/vendor/examples/sql/sqlite.users.sql
diff --git a/vendor/sabre/dav/examples/webserver/apache2_htaccess.conf b/vendor/examples/webserver/apache2_htaccess.conf
index c5f29ba80..c5f29ba80 100644
--- a/vendor/sabre/dav/examples/webserver/apache2_htaccess.conf
+++ b/vendor/examples/webserver/apache2_htaccess.conf
diff --git a/vendor/sabre/dav/examples/webserver/apache2_vhost.conf b/vendor/examples/webserver/apache2_vhost.conf
index 74289641e..74289641e 100644
--- a/vendor/sabre/dav/examples/webserver/apache2_vhost.conf
+++ b/vendor/examples/webserver/apache2_vhost.conf
diff --git a/vendor/sabre/dav/examples/webserver/apache2_vhost_cgi.conf b/vendor/examples/webserver/apache2_vhost_cgi.conf
index 607254c6e..607254c6e 100644
--- a/vendor/sabre/dav/examples/webserver/apache2_vhost_cgi.conf
+++ b/vendor/examples/webserver/apache2_vhost_cgi.conf
diff --git a/vendor/sabre/dav/bin/migrateto17.php b/vendor/sabre/dav/bin/migrateto17.php
deleted file mode 100755
index 3ccf0a380..000000000
--- a/vendor/sabre/dav/bin/migrateto17.php
+++ /dev/null
@@ -1,284 +0,0 @@
-#!/usr/bin/env php
-<?php
-
-echo "SabreDAV migrate script for version 1.7\n";
-
-if ($argc<2) {
-
-    echo <<<HELLO
-
-This script help you migrate from a pre-1.7 database to 1.7 and later\n
-Both the 'calendarobjects' and 'calendars' tables will be upgraded.
-
-If you do not have this table, or don't use the default PDO CalDAV backend
-it's pointless to run this script.
-
-Keep in mind that some processing will be done on every single record of this
-table and in addition, ALTER TABLE commands will be executed.
-If you have a large calendarobjects table, this may mean that this process
-takes a while.
-
-Usage:
-
-php {$argv[0]} [pdo-dsn] [username] [password]
-
-For example:
-
-php {$argv[0]} "mysql:host=localhost;dbname=sabredav" root password
-php {$argv[0]} sqlite:data/sabredav.db
-
-HELLO;
-
-    exit();
-
-}
-
-// There's a bunch of places where the autoloader could be, so we'll try all of
-// them.
-$paths = array(
-    __DIR__ . '/../vendor/autoload.php',
-    __DIR__ . '/../../../autoload.php',
-);
-
-foreach($paths as $path) {
-    if (file_exists($path)) {
-        include $path;
-        break;
-    }
-}
-
-$dsn = $argv[1];
-$user = isset($argv[2])?$argv[2]:null;
-$pass = isset($argv[3])?$argv[3]:null;
-
-echo "Connecting to database: " . $dsn . "\n";
-
-$pdo = new PDO($dsn, $user, $pass);
-$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
-$pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);
-
-echo "Validating existing table layout\n";
-
-// The only cross-db way to do this, is to just fetch a single record.
-$row = $pdo->query("SELECT * FROM calendarobjects LIMIT 1")->fetch();
-
-if (!$row) {
-    echo "Error: This database did not have any records in the calendarobjects table, you should just recreate the table.\n";
-    exit(-1);
-}
-
-$requiredFields = array(
-    'id',
-    'calendardata',
-    'uri',
-    'calendarid',
-    'lastmodified',
-);
-
-foreach($requiredFields as $requiredField) {
-    if (!array_key_exists($requiredField,$row)) {
-        echo "Error: The current 'calendarobjects' table was missing a field we expected to exist.\n";
-        echo "For safety reasons, this process is stopped.\n";
-        exit(-1);
-    }
-}
-
-$fields17 = array(
-    'etag',
-    'size',
-    'componenttype',
-    'firstoccurence',
-    'lastoccurence',
-);
-
-$found = 0;
-foreach($fields17 as $field) {
-    if (array_key_exists($field, $row)) {
-        $found++;
-    }
-}
-
-if ($found === 0) {
-    echo "The database had the 1.6 schema. Table will now be altered.\n";
-    echo "This may take some time for large tables\n";
-
-    switch($pdo->getAttribute(PDO::ATTR_DRIVER_NAME)) {
-
-        case 'mysql' :
-
-            $pdo->exec(<<<SQL
-ALTER TABLE calendarobjects
-ADD etag VARCHAR(32),
-ADD size INT(11) UNSIGNED,
-ADD componenttype VARCHAR(8),
-ADD firstoccurence INT(11) UNSIGNED,
-ADD lastoccurence INT(11) UNSIGNED
-SQL
-        );
-            break;
-            case 'sqlite' :
-                $pdo->exec('ALTER TABLE calendarobjects ADD etag text');
-                $pdo->exec('ALTER TABLE calendarobjects ADD size integer');
-                $pdo->exec('ALTER TABLE calendarobjects ADD componenttype TEXT');
-                $pdo->exec('ALTER TABLE calendarobjects ADD firstoccurence integer');
-                $pdo->exec('ALTER TABLE calendarobjects ADD lastoccurence integer');
-                break;
-
-        default :
-            die('This upgrade script does not support this driver (' . $pdo->getAttribute(PDO::ATTR_DRIVER_NAME) . ")\n");
-
-    }
-    echo "Database schema upgraded.\n";
-
-} elseif ($found === 5) {
-
-    echo "Database already had the 1.7 schema\n";
-
-} else {
-
-    echo "The database had $found out of 5 from the changes for 1.7. This is scary and unusual, so we have to abort.\n";
-    echo "You can manually try to upgrade the schema, and then run this script again.\n";
-    exit(-1);
-
-}
-
-echo "Now, we need to parse every record and pull out some information.\n";
-
-$result = $pdo->query('SELECT id, calendardata FROM calendarobjects');
-$stmt = $pdo->prepare('UPDATE calendarobjects SET etag = ?, size = ?, componenttype = ?, firstoccurence = ?, lastoccurence = ? WHERE id = ?');
-
-echo "Total records found: " . $result->rowCount() . "\n";
-$done = 0;
-$total = $result->rowCount();
-while($row = $result->fetch()) {
-
-    try {
-        $newData = getDenormalizedData($row['calendardata']);
-    } catch (Exception $e) {
-        echo "===\nException caught will trying to parser calendarobject.\n";
-        echo "Error message: " . $e->getMessage() . "\n";
-        echo "Record id: " . $row['id'] . "\n";
-        echo "This record is ignored, you should inspect it to see if there's anything wrong.\n===\n";
-        continue;
-    }
-    $stmt->execute(array(
-        $newData['etag'],
-        $newData['size'],
-        $newData['componentType'],
-        $newData['firstOccurence'],
-        $newData['lastOccurence'],
-        $row['id'],
-    ));
-    $done++;
-
-    if ($done % 500 === 0) {
-        echo "Completed: $done / $total\n";
-    }
-}
-echo "Completed: $done / $total\n";
-
-echo "Checking the calendars table needs changes.\n";
-$row = $pdo->query("SELECT * FROM calendars LIMIT 1")->fetch();
-
-if (array_key_exists('transparent', $row)) {
-
-    echo "The calendars table is already up to date\n";
-
-} else {
-
-    echo "Adding the 'transparent' field to the calendars table\n";
-
-    switch($pdo->getAttribute(PDO::ATTR_DRIVER_NAME)) {
-
-        case 'mysql' :
-            $pdo->exec("ALTER TABLE calendars ADD transparent TINYINT(1) NOT NULL DEFAULT '0'");
-            break;
-        case 'sqlite' :
-            $pdo->exec("ALTER TABLE calendars ADD transparent bool");
-            break;
-
-        default :
-            die('This upgrade script does not support this driver (' . $pdo->getAttribute(PDO::ATTR_DRIVER_NAME) . ")\n");
-
-    }
-
-}
-
-echo "Process completed!\n";
-
-/**
- * Parses some information from calendar objects, used for optimized
- * calendar-queries.
- *
- * Blantently copied from Sabre\CalDAV\Backend\PDO
- *
- * Returns an array with the following keys:
- *   * etag
- *   * size
- *   * componentType
- *   * firstOccurence
- *   * lastOccurence
- *
- * @param string $calendarData
- * @return array
- */
-function getDenormalizedData($calendarData) {
-
-    $vObject = \Sabre\VObject\Reader::read($calendarData);
-    $componentType = null;
-    $component = null;
-    $firstOccurence = null;
-    $lastOccurence = null;
-    foreach($vObject->getComponents() as $component) {
-        if ($component->name!=='VTIMEZONE') {
-            $componentType = $component->name;
-            break;
-        }
-    }
-    if (!$componentType) {
-        throw new \Sabre\DAV\Exception\BadRequest('Calendar objects must have a VJOURNAL, VEVENT or VTODO component');
-    }
-    if ($componentType === 'VEVENT') {
-        $firstOccurence = $component->DTSTART->getDateTime()->getTimeStamp();
-        // Finding the last occurence is a bit harder
-        if (!isset($component->RRULE)) {
-            if (isset($component->DTEND)) {
-                $lastOccurence = $component->DTEND->getDateTime()->getTimeStamp();
-            } elseif (isset($component->DURATION)) {
-                $endDate = clone $component->DTSTART->getDateTime();
-                $endDate->add(\Sabre\VObject\DateTimeParser::parse($component->DURATION->value));
-                $lastOccurence = $endDate->getTimeStamp();
-            } elseif (!$component->DTSTART->hasTime()) {
-                $endDate = clone $component->DTSTART->getDateTime();
-                $endDate->modify('+1 day');
-                $lastOccurence = $endDate->getTimeStamp();
-            } else {
-                $lastOccurence = $firstOccurence;
-            }
-        } else {
-            $it = new \Sabre\VObject\Recur\EventIterator($vObject, (string)$component->UID);
-            $maxDate = new DateTime(\Sabre\CalDAV\Backend\PDO::MAX_DATE);
-            if ($it->isInfinite()) {
-                $lastOccurence = $maxDate->getTimeStamp();
-            } else {
-                $end = $it->getDtEnd();
-                while($it->valid() && $end < $maxDate) {
-                    $end = $it->getDtEnd();
-                    $it->next();
-
-                }
-                $lastOccurence = $end->getTimeStamp();
-            }
-
-        }
-    }
-
-    return array(
-        'etag' => md5($calendarData),
-        'size' => strlen($calendarData),
-        'componentType' => $componentType,
-        'firstOccurence' => $firstOccurence,
-        'lastOccurence'  => $lastOccurence,
-    );
-
-}
diff --git a/vendor/sabre/dav/lib/CalDAV/IShareableCalendar.php b/vendor/sabre/dav/lib/CalDAV/IShareableCalendar.php
deleted file mode 100644
index 7420d94f7..000000000
--- a/vendor/sabre/dav/lib/CalDAV/IShareableCalendar.php
+++ /dev/null
@@ -1,48 +0,0 @@
-<?php
-
-namespace Sabre\CalDAV;
-
-/**
- * This interface represents a Calendar that can be shared with other users.
- *
- * @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-interface IShareableCalendar extends ICalendar {
-
-    /**
-     * Updates the list of shares.
-     *
-     * The first array is a list of people that are to be added to the
-     * calendar.
-     *
-     * Every element in the add array has the following properties:
-     *   * href - A url. Usually a mailto: address
-     *   * commonName - Usually a first and last name, or false
-     *   * summary - A description of the share, can also be false
-     *   * readOnly - A boolean value
-     *
-     * Every element in the remove array is just the address string.
-     *
-     * @param array $add
-     * @param array $remove
-     * @return void
-     */
-    function updateShares(array $add, array $remove);
-
-    /**
-     * Returns the list of people whom this calendar is shared with.
-     *
-     * Every element in this array should have the following properties:
-     *   * href - Often a mailto: address
-     *   * commonName - Optional, for example a first + last name
-     *   * status - See the Sabre\CalDAV\SharingPlugin::STATUS_ constants.
-     *   * readOnly - boolean
-     *   * summary - Optional, a description for the share
-     *
-     * @return array
-     */
-    function getShares();
-
-}
diff --git a/vendor/sabre/dav/lib/CalDAV/ShareableCalendar.php b/vendor/sabre/dav/lib/CalDAV/ShareableCalendar.php
deleted file mode 100644
index c81c96300..000000000
--- a/vendor/sabre/dav/lib/CalDAV/ShareableCalendar.php
+++ /dev/null
@@ -1,72 +0,0 @@
-<?php
-
-namespace Sabre\CalDAV;
-
-/**
- * This object represents a CalDAV calendar that can be shared with other
- * users.
- *
- * @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-class ShareableCalendar extends Calendar implements IShareableCalendar {
-
-    /**
-     * Updates the list of shares.
-     *
-     * The first array is a list of people that are to be added to the
-     * calendar.
-     *
-     * Every element in the add array has the following properties:
-     *   * href - A url. Usually a mailto: address
-     *   * commonName - Usually a first and last name, or false
-     *   * summary - A description of the share, can also be false
-     *   * readOnly - A boolean value
-     *
-     * Every element in the remove array is just the address string.
-     *
-     * @param array $add
-     * @param array $remove
-     * @return void
-     */
-    function updateShares(array $add, array $remove) {
-
-        $this->caldavBackend->updateShares($this->calendarInfo['id'], $add, $remove);
-
-    }
-
-    /**
-     * Returns the list of people whom this calendar is shared with.
-     *
-     * Every element in this array should have the following properties:
-     *   * href - Often a mailto: address
-     *   * commonName - Optional, for example a first + last name
-     *   * status - See the Sabre\CalDAV\SharingPlugin::STATUS_ constants.
-     *   * readOnly - boolean
-     *   * summary - Optional, a description for the share
-     *
-     * @return array
-     */
-    function getShares() {
-
-        return $this->caldavBackend->getShares($this->calendarInfo['id']);
-
-    }
-
-    /**
-     * Marks this calendar as published.
-     *
-     * Publishing a calendar should automatically create a read-only, public,
-     * subscribable calendar.
-     *
-     * @param bool $value
-     * @return void
-     */
-    function setPublishStatus($value) {
-
-        $this->caldavBackend->setPublishStatus($this->calendarInfo['id'], $value);
-
-    }
-
-}
diff --git a/vendor/sabre/dav/tests/Sabre/CalDAV/ShareableCalendarTest.php b/vendor/sabre/dav/tests/Sabre/CalDAV/ShareableCalendarTest.php
deleted file mode 100644
index 15b869d50..000000000
--- a/vendor/sabre/dav/tests/Sabre/CalDAV/ShareableCalendarTest.php
+++ /dev/null
@@ -1,60 +0,0 @@
-<?php
-
-namespace Sabre\CalDAV;
-
-use Sabre\DAVACL;
-
-class ShareableCalendarTest extends \PHPUnit_Framework_TestCase {
-
-    protected $backend;
-    protected $instance;
-
-    function setUp() {
-
-        $props = array(
-            'id' => 1,
-        );
-
-        $this->backend = new Backend\MockSharing(
-            array($props)
-        );
-        $this->backend->updateShares(1, array(
-            array(
-                'href' => 'mailto:removeme@example.org',
-                'commonName' => 'To be removed',
-                'readOnly' => true,
-            ),
-        ), array());
-
-        $this->instance = new ShareableCalendar($this->backend, $props);
-
-    }
-
-    function testUpdateShares() {
-
-        $this->instance->updateShares(array(
-            array(
-                'href' => 'mailto:test@example.org',
-                'commonName' => 'Foo Bar',
-                'summary' => 'Booh',
-                'readOnly' => false,
-            ),
-        ), array('mailto:removeme@example.org'));
-
-        $this->assertEquals(array(array(
-            'href' => 'mailto:test@example.org',
-            'commonName' => 'Foo Bar',
-            'summary' => 'Booh',
-            'readOnly' => false,
-            'status' => SharingPlugin::STATUS_NORESPONSE,
-        )), $this->instance->getShares());
-
-    }
-
-    function testPublish() {
-
-        $this->assertNull($this->instance->setPublishStatus(true));
-        $this->assertNull($this->instance->setPublishStatus(false));
-
-    }
-}
diff --git a/vendor/sabre/dav/tests/phpunit.xml b/vendor/sabre/dav/tests/phpunit.xml
deleted file mode 100644
index e16ec38b5..000000000
--- a/vendor/sabre/dav/tests/phpunit.xml
+++ /dev/null
@@ -1,40 +0,0 @@
-<phpunit
-  colors="true"
-  bootstrap="bootstrap.php"
-  convertErrorsToExceptions="true"
-  convertNoticesToExceptions="true"
-  convertWarningsToExceptions="true"
-  strict="true"
-  >
-  <testsuite name="sabre-vobject">
-      <directory>../vendor/sabre/vobject/tests/VObject</directory>
-  </testsuite>
-  <testsuite name="sabre-event">
-      <directory>../vendor/sabre/event/tests/</directory>
-  </testsuite>
-  <testsuite name="sabre-http">
-      <directory>../vendor/sabre/http/tests/HTTP</directory>
-  </testsuite>
-  <testsuite name="sabre-dav">
-      <directory>Sabre/DAV</directory>
-  </testsuite>
-  <testsuite name="sabre-davacl">
-      <directory>Sabre/DAVACL</directory>
-  </testsuite>
-  <testsuite name="sabre-caldav">
-      <directory>Sabre/CalDAV</directory>
-  </testsuite>
-  <testsuite name="sabre-carddav">
-      <directory>Sabre/CardDAV</directory>
-  </testsuite>
-
-  <filter>
-    <whitelist addUncoveredFilesFromWhitelist="true">
-       <directory suffix=".php">../lib/</directory>
-       <exclude>
-         <file>../lib/Sabre/autoload.php</file>
-         <file>../lib/Sabre/VObject/includes.php</file>
-       </exclude>
-    </whitelist>
-  </filter>
-</phpunit>
diff --git a/vendor/sabre/vobject/ChangeLog.md b/vendor/sabre/vobject/ChangeLog.md
deleted file mode 100644
index 60501f930..000000000
--- a/vendor/sabre/vobject/ChangeLog.md
+++ /dev/null
@@ -1,563 +0,0 @@
-ChangeLog
-=========
-
-3.4.5 (2015-06-02)
-------------------
-
-* #229: Converting vcards from 3.0 to 4.0 that contained a `LANG` property
-  would throw an error.
-
-
-3.4.4 (2015-05-27)
-------------------
-
-* #228: Fixed a 'party crasher' bug in the iTip broker. This would break
-  scheduling in some cases.
-
-
-3.4.3 (2015-05-19)
-------------------
-
-* #219: Corrected validation of `EXDATE` properties with more than one value.
-* #212: `BYSETPOS` with values below `-1` was broken and could cause infinite
-  loops.
-* #211: Fix `BYDAY=-5TH` in recurrence iterator. (@lindquist)
-* #216: `ENCODING` parameter is now validated for all document types.
-* #217: Initializing vCard `DATE` objects with a PHP DateTime object will now
-  work correctly. (@thomascube)
-
-
-3.4.2 (2015-02-25)
-------------------
-
-* #210: iTip: Replying to an event without a master event was broken.
-
-
-3.4.1 (2015-02-24)
-------------------
-
-* A minor change to ensure that unittests work correctly in the sabre/dav
-  test-suite.
-
-
-3.4.0 (2015-02-23)
-------------------
-
-* #196: Made parsing recurrence rules a lot faster on big calendars.
-* Updated windows timezone mappings to latest unicode version.
-* #202: Support for parsing and validating `VAVAILABILITY` components. (@Hywan)
-* #195: PHP 5.3 compatibility in 'generatevcards' script. (@rickdenhaan)
-* #205: Improving handling of multiple `EXDATE` when processing iTip changes.
-  (@armin-hackmann)
-* #187: Fixed validator rules for `LAST-MODIFIED` properties.
-* #188: Retain floating times when generating instances using
-  `Recur\EventIterator`.
-* #203: Skip tests for timezones that are not supported on older PHP versions,
-  instead of a hard fail.
-* #204: Dealing a bit better with vCard date-time values that contained
-  milliseconds. (which is normally invalid). (@armin-hackmann)
-
-
-3.3.5 (2015-01-09)
-------------------
-
-* #168: Expanding calendars now removes objects with recurrence rules that
-  don't have a valid recurrence instance.
-* #177: SCHEDULE-STATUS should not contain a reason phrase, only a status
-  code.
-* #175: Parser can now read and skip the UTF-8 BOM.
-* #179: Added `isFloating` to `DATE-TIME` properties.
-* #179: Fixed jCal serialization of floating `DATE-TIME` properties.
-* #173: vCard converter failed for `X-ABDATE` properties that had no
-  `X-ABLABEL`.
-* #180: Added `PROFILE_CALDAV` and `PROFILE_CARDDAV` to enable validation rules
-  specific for CalDAV/CardDAV servers.
-* #176: A missing `UID` is no longer an error, but a warning for the vCard
-  validator, unless `PROFILE_CARDDAV` is specified.
-
-
-3.3.4 (2014-11-19)
-------------------
-
-* #154: Converting `ANNIVERSARY` to `X-ANNIVERSARY` and `X-ABDATE` and
-  vice-versa when converting to/from vCard 4.
-* #154: It's now possible to easily select all vCard properties belonging to
-  a single group with `$vcard->{'ITEM1.'}` syntax. (@armin-hackmann)
-* #156: Simpler way to check if a string is UTF-8. (@Hywan)
-* Unittest improvements.
-* #159: The recurrence iterator, freebusy generator and iCalendar DATE and
-  DATE-TIME properties can now all accept a reference timezone when working
-  floating times or all-day events.
-* #159: Master events will no longer get a `RECURRENCE-ID` when expanding.
-* #159: `RECURRENCE-ID` for all-day events will now be correct when expanding.
-* #163: Added a `getTimeZone()` method to `VTIMEZONE` components.
-
-
-3.3.3 (2014-10-09)
-------------------
-
-* #142: `CANCEL` and `REPLY` messages now include the `DTSTART` from the
-  original event.
-* #143: `SCHEDULE-AGENT` on the `ORGANIZER` property is respected.
-* #144: `PARTSTAT=NEEDS-ACTION` is now set for new invites, if no `PARTSTAT` is
-  set to support the inbox feature of iOS.
-* #147: Bugs related to scheduling all-day events.
-* #148: Ignore events that have attendees but no organizer.
-* #149: Avoiding logging errors during timezone detection. This is a workaround
-  for a PHP bug.
-* Support for "Line Islands Standard Time" windows timezone.
-* #154: Correctly work around vCard parameters that have a value but no name.
-
-
-3.3.2 (2014-09-19)
-------------------
-
-* Changed: iTip broker now sets RSVP status to false when replies are received.
-* #118: iTip Message now has a `getScheduleStatus()` method.
-* #119: Support for detecting 'significant changes'.
-* #120: Support for `SCHEDULE-FORCE-SEND`.
-* #121: iCal demands parameters containing the + sign to be quoted.
-* #122: Don't generate REPLY messages for events that have been cancelled.
-* #123: Added `SUMMARY` to iTip messages.
-* #130: Incorrect validation rules for `RELATED` (should be `RELATED-TO`).
-* #128: `ATTACH` in iCalendar is `URI` by default, not `BINARY`.
-* #131: RRULE that doesn't provide a single valid instance now throws an
-  exception.
-* #136: Validator rejects *all* control characters. We were missing a few.
-* #133: Splitter objects will throw exceptions when receiving incompatible
-  objects.
-* #127: Attendees who delete recurring event instances events they had already
-  declined earlier will no longer generate another reply.
-* #125: Send CANCEL messages when ORGANIZER property gets deleted.
-
-
-3.3.1 (2014-08-18)
-------------------
-
-* Changed: It's now possible to pass DateTime objects when using the magic
-  setters on properties. (`$event->DTSTART = new DateTime('now')`).
-* #111: iTip Broker does not process attendee adding events to EXDATE.
-* #112: EventIterator now sets TZID on RECURRENCE-ID.
-* #113: Timezone support during creation of iTip REPLY messages.
-* #114: VTIMEZONE is retained when generating new REQUEST objects.
-* #114: Support for 'MAILTO:' style email addresses (in uppercase) in the iTip
-  broker. This improves evolution support.
-* #115: Using REQUEST-STATUS from REPLY messages and now propegating that into
-  SCHEDULE-STATUS.
-
-
-3.3.0 (2014-08-07)
-------------------
-
-* We now use PSR-4 for the directory structure. This means that everything
-  that was used to be in the `lib/Sabre/VObject` directory is now moved to
-  `lib/`. If you use composer to load this library, you shouldn't have to do
-  anything about that though.
-* VEVENT now get populated with a DTSTAMP and UID property by default.
-* BC Break: Removed the 'includes.php' file. Use composer instead.
-* #103: Added support for processing [iTip][iTip] messages. This allows a user
-  to parse incoming iTip messages and apply the result on existing calendars,
-  or automatically generate invites/replies/cancellations based on changes that
-  a user made on objects.
-* #75, #58, #18: Fixes related to overriding the first event in recurrences.
-* Added: VCalendar::getBaseComponent to find the 'master' component in a
-  calendar.
-* #51: Support for iterating RDATE properties.
-* Fixed: Issue #101: RecurrenceIterator::nextMonthly() shows events that are
-  excluded events with wrong time
-
-
-3.2.4 (2014-07-14)
-------------------
-
-* Added: Issue #98. The VCardConverter now takes `X-APPLE-OMIT-YEAR` into
-  consideration when converting between vCard 3 and 4.
-* Fixed: Issue #96. Some support for Yahoo's broken vcards.
-* Fixed: PHP 5.3 support was broken in the cli tool.
-
-
-3.2.3 (2014-06-12)
-------------------
-
-* Validator now checks if DUE and DTSTART are of the same type in VTODO, and
-  ensures that DUE is always after DTSTART.
-* Removed documentation from source repository, to http://sabre.io/vobject/
-* Expanded the vobject cli tool validation output to make it easier to find
-  issues.
-* Fixed: vobject repair. It was not working for iCalendar objects.
-
-
-3.2.2 (2014-05-07)
-------------------
-
-* Minor tweak in unittests to make it run on PHP 5.5.12. Json-prettifying
-  slightly changed which caused the test to fail.
-
-
-3.2.1 (2014-05-03)
-------------------
-
-* Minor tweak to make the unittests run with the latest hhvm on travis.
-* Updated timezone definitions.
-* Updated copyright links to point to http://sabre.io/
-
-
-3.2.0 (2014-04-02)
-------------------
-
-* Now hhvm compatible!
-* The validator can now detect a _lot_ more problems. Many rules for both
-  iCalendar and vCard were added.
-* Added: bin/generate_vcards, a utility to generate random vcards for testing
-  purposes. Patches are welcome to add more data.
-* Updated: Windows timezone mapping to latest version from unicode.org
-* Changed: The timezone maps are now loaded in from external files, in
-  lib/Sabre/VObject/timezonedata.
-* Added: Fixing badly encoded URL's from google contacts vcards.
-* Fixed: Issue #68. Couldn't decode properties ending in a colon.
-* Fixed: Issue #72. RecurrenceIterator should respect timezone in the UNTIL
-  clause.
-* Fixed: Issue #67. BYMONTH limit on DAILY recurrences.
-* Fixed: Issue #26. Return a more descriptive error when coming across broken
-  BYDAY rules.
-* Fixed: Issue #28. Incorrect timezone detection for some timezones.
-* Fixed: Issue #70. Casting a parameter with a null value to string would fail.
-* Added: Support for rfc6715 and rfc6474.
-* Added: Support for DateTime objects in the VCard DATE-AND-OR-TIME property.
-* Added: UUIDUtil, for easily creating unique identifiers.
-* Fixed: Issue #83. Creating new VALUE=DATE objects using php's DateTime.
-* Fixed: Issue #86. Don't go into an infinite loop when php errors are
-  disabled and an invalid file is read.
-
-
-3.1.4 (2014-03-30)
-------------------
-
-* Fixed: Issue #87: Several compatibility fixes related to timezone handling
-  changes in PHP 5.5.10.
-
-
-3.1.3 (2013-10-02)
-------------------
-
-* Fixed: Support from properties from draft-daboo-valarm-extensions-04. Issue
-  #56.
-* Fixed: Issue #54. Parsing a stream of multiple vcards separated by more than
-  one newline. Thanks @Vedmak for the patch.
-* Fixed: Serializing vcard 2.1 parameters with no name caused a literal '1' to
-  be inserted.
-* Added: VCardConverter removed properties that are no longer supported in vCard
-  4.0.
-* Added: vCards with a minimum number of values (such as N), but don't have that
-  many, are now automatically padded with empty components.
-* Added: The vCard validator now also checks for a minimum number of components,
-  and has the ability to repair these.
-* Added: Some support for vCard 2.1 in the VCard converter, to upgrade to vCard
-  3.0 or 4.0.
-* Fixed: Issue 60 Use Document::$componentMap when instantiating the top-level
-  VCalendar and VCard components.
-* Fixed: Issue 62: Parsing iCalendar parameters with no value.
-* Added: --forgiving option to vobject utility.
-* Fixed: Compound properties such as ADR were not correctly split up in vCard
-  2.1 quoted printable-encoded properties.
-* Fixed: Issue 64: Encoding of binary properties of converted vCards. Thanks
-  @DominikTo for the patch.
-
-
-3.1.2 (2013-08-13)
-------------------
-
-* Fixed: Setting correct property group on VCard conversion
-
-
-3.1.1 (2013-08-02)
-------------------
-
-* Fixed: Issue #53. A regression in RecurrenceIterator.
-
-
-3.1.0 (2013-07-27)
-------------------
-
-* Added: bad-ass new cli debugging utility (in bin/vobject).
-* Added: jCal and jCard parser.
-* Fixed: URI properties should not escape ; and ,.
-* Fixed: VCard 4 documents now correctly use URI as a default value-type for
-  PHOTO and others. BINARY no longer exists in vCard 4.
-* Added: Utility to convert between 2.1, 3.0 and 4.0 vCards.
-* Added: You can now add() multiple parameters to a property in one call.
-* Added: Parameter::has() for easily checking if a parameter value exists.
-* Added: VCard::preferred() to find a preferred email, phone number, etc for a
-  contact.
-* Changed: All $duration properties are now public.
-* Added: A few validators for iCalendar documents.
-* Fixed: Issue #50. RecurrenceIterator gives incorrect result when exception
-  events are out of order in the iCalendar file.
-* Fixed: Issue #48. Overridden events in the recurrence iterator that were past
-  the UNTIL date were ignored.
-* Added: getDuration for DURATION values such as TRIGGER. Thanks to
-  @SimonSimCity.
-* Fixed: Issue #52. vCard 2.1 parameters with no name may lose values if there's
-  more than 1. Thanks to @Vedmak.
-
-
-3.0.0 (2013-06-21)
-------------------
-
-* Fixed: includes.php file was still broken. Our tool to generate it had some
-  bugs.
-
-
-3.0.0-beta4 (2013-06-21)
-------------------------
-
-* Fixed: includes.php was no longer up to date.
-
-
-3.0.0-beta3 (2013-06-17)
-------------------------
-
-* Added: OPTION_FORGIVING now also allows slashes in property names.
-* Fixed: DateTimeParser no longer fails on dates with years < 1000 & > 4999
-* Fixed: Issue 36: Workaround for the recurrenceiterator and caldav events with
-  a missing base event.
-* Fixed: jCard encoding of TIME properties.
-* Fixed: jCal encoding of REQUEST-STATUS, GEO and PERIOD values.
-
-
-3.0.0-beta2 (2013-06-10)
-------------------------
-
-* Fixed: Corrected includes.php file.
-* Fixed: vCard date-time parser supported extended-format dates as well.
-* Changed: Properties have been moved to an ICalendar or VCard directory.
-* Fixed: Couldn't parse vCard 3 extended format dates and times.
-* Fixed: Couldn't export jCard DATE values correctly.
-* Fixed: Recursive loop in ICalendar\DateTime property.
-
-
-3.0.0-beta1 (2013-06-07)
-------------------------
-
-* Added: jsonSerialize() for creating jCal and jCard documents.
-* Added: helper method to parse vCard dates and times.
-* Added: Specialized classes for FLOAT, LANGUAGE-TAG, TIME, TIMESTAMP,
-  DATE-AND-OR-TIME, CAL-ADDRESS, UNKNOWN and UTC-OFFSET properties.
-* Removed: CommaSeparatedText property. Now included into Text.
-* Fixed: Multiple parameters with the same name are now correctly encoded.
-* Fixed: Parameter values containing a comma are now enclosed in double-quotes.
-* Fixed: Iterating parameter values should now fully work as expected.
-* Fixed: Support for vCard 2.1 nameless parameters.
-* Changed: $valueMap, $componentMap and $propertyMap now all use fully-qualified
-  class names, so they are actually overridable.
-* Fixed: Updating DATE-TIME to DATE values now behaves like expected.
-
-
-3.0.0-alpha4 (2013-05-31)
--------------------------
-
-* Added: It's now possible to send parser options to the splitter classes.
-* Added: A few tweaks to improve component and property creation.
-
-
-3.0.0-alpha3 (2013-05-13)
--------------------------
-
-* Changed: propertyMap, valueMap and componentMap are now static properties.
-* Changed: Component::remove() will throw an exception when trying to a node
-  that's not a child of said component.
-* Added: Splitter objects are now faster, line numbers are accurately reported
-  and use less memory.
-* Added: MimeDir parser can now continue parsing with the same stream buffer.
-* Fixed: vobjectvalidate.php is operational again.
-* Fixed: \r is properly stripped in text values.
-* Fixed: QUOTED-PRINTABLE is now correctly encoded as well as encoded, for
-  vCards 2.1.
-* Fixed: Parser assumes vCard 2.1, if no version was supplied.
-
-
-3.0.0-alpha2 (2013-05-22)
--------------------------
-
-* Fixed: vCard URL properties were referencing a non-existant class.
-
-
-3.0.0-alpha1 (2013-05-21)
--------------------------
-
-* Fixed: Now correctly dealing with escaping of properties. This solves the
-  problem with double-backslashes where they don't belong.
-* Added: Easy support for properties with more than one value, using setParts
-  and getParts.
-* Added: Support for broken 2.1 vCards produced by microsoft.
-* Added: Automatically decoding quoted-printable values.
-* Added: Automatically decoding base64 values.
-* Added: Decoding RFC6868 parameter values (uses ^ as an escape character).
-* Added: Fancy new MimeDir parser that can also parse streams.
-* Added: Automatically mapping many, many properties to a property-class with
-  specialized API's.
-* Added: remove() method for easily removing properties and sub-components
-  components.
-* Changed: Components, Properties and Parameters can no longer be created with
-  Component::create, Property::create and Parameter::create. They must instead
-  be created through the root component. (A VCalendar or VCard object).
-* Changed: API for DateTime properties has slightly changed.
-* Changed: the ->value property is now protected everywhere. Use getParts() and
-  getValue() instead.
-* BC Break: No support for mac newlines (\r). Never came across these anyway.
-* Added: add() method to the Property class.
-* Added: It's now possible to easy set multi-value properties as arrays.
-* Added: When setting date-time properties you can just pass PHP's DateTime
-  object.
-* Added: New components automatically get a bunch of default properties, such as
-  VERSION and CALSCALE.
-* Added: You can add new sub-components much quicker with the magic setters, and
-  add() method.
-
-
-2.1.7 (2015-01-21)
-------------------
-
-* Fixed: Issue #94, a workaround for bad escaping of ; and , in compound
-  properties. It's not a full solution, but it's an improvement for those
-  stuck in the 2.1 versions.
-
-
-2.1.6 (2014-12-10)
-------------------
-
-* Fixed: Minor change to make sure that unittests succeed on every PHP version.
-
-
-2.1.5 (2014-06-03)
-------------------
-
-* Fixed: #94: Better parameter escaping.
-* Changed: Documentation cleanups.
-
-
-2.1.4 (2014-03-30)
-------------------
-
-* Fixed: Issue #87: Several compatibility fixes related to timezone handling
-  changes in PHP 5.5.10.
-
-
-2.1.3 (2013-10-02)
-------------------
-
-* Fixed: Issue #55. \r must be stripped from property values.
-* Fixed: Issue #65. Putting quotes around parameter values that contain a colon.
-
-
-2.1.2 (2013-08-02)
-------------------
-
-* Fixed: Issue #53. A regression in RecurrenceIterator.
-
-
-2.1.1 (2013-07-27)
-------------------
-
-* Fixed: Issue #50. RecurrenceIterator gives incorrect result when exception
-  events are out of order in the iCalendar file.
-* Fixed: Issue #48. Overridden events in the recurrence iterator that were past
-  the UNTIL date were ignored.
-
-
-2.1.0 (2013-06-17)
-------------------
-
-* This version is fully backwards compatible with 2.0.\*. However, it contains a
-  few new API's that mimic the VObject 3 API. This allows it to be used a
-  'bridge' version. Specifically, this new version exists so SabreDAV 1.7 and
-  1.8 can run with both the 2 and 3 versions of this library.
-* Added: Property\DateTime::hasTime().
-* Added: Property\MultiDateTime::hasTime().
-* Added: Property::getValue().
-* Added: Document class.
-* Added: Document::createComponent and Document::createProperty.
-* Added: Parameter::getValue().
-
-
-2.0.7 (2013-03-05)
-------------------
-
-* Fixed: Microsoft re-uses their magic numbers for different timezones,
-  specifically id 2 for both Sarajevo and Lisbon). A workaround was added to
-  deal with this.
-
-
-2.0.6 (2013-02-17)
-------------------
-
-* Fixed: The reader now properly parses parameters without a value.
-
-
-2.0.5 (2012-11-05)
-------------------
-
-* Fixed: The FreeBusyGenerator is now properly using the factory methods for
-  creation of components and properties.
-
-
-2.0.4 (2012-11-02)
-------------------
-
-* Added: Known Lotus Notes / Domino timezone id's.
-
-
-2.0.3 (2012-10-29)
-------------------
-
-* Added: Support for 'GMT+????' format in TZID's.
-* Added: Support for formats like SystemV/EST5EDT in TZID's.
-* Fixed: RecurrenceIterator now repairs recurrence rules where UNTIL < DTSTART.
-* Added: Support for BYHOUR in FREQ=DAILY (@hollodk).
-* Added: Support for BYHOUR and BYDAY in FREQ=WEEKLY.
-
-
-2.0.2 (2012-10-06)
-------------------
-
-* Added: includes.php file, to load the entire library in one go.
-* Fixed: A problem with determining alarm triggers for TODO's.
-
-
-2.0.1 (2012-09-22)
-------------------
-
-* Removed: Element class. It wasn't used.
-* Added: Basic validation and repair methods for broken input data.
-* Fixed: RecurrenceIterator could infinitely loop when an INTERVAL of 0 was
-  specified.
-* Added: A cli script that can validate and automatically repair vcards and
-  iCalendar objects.
-* Added: A new 'Compound' property, that can automatically split up parts for
-  properties such as N, ADR, ORG and CATEGORIES.
-* Added: Splitter classes, that can split up large objects (such as exports)
-  into individual objects (thanks @DominikTO and @armin-hackmann).
-* Added: VFREEBUSY component, which allows easily checking wether timeslots are
-  available.
-* Added: The Reader class now has a 'FORGIVING' option, which allows it to parse
-  properties with incorrect characters in the name (at this time, it just allows
-  underscores).
-* Added: Also added the 'IGNORE_INVALID_LINES' option, to completely disregard
-  any invalid lines.
-* Fixed: A bug in Windows timezone-id mappings for times created in Greenlands
-  timezone (sorry Greenlanders! I do care!).
-* Fixed: DTEND was not generated correctly for VFREEBUSY reports.
-* Fixed: Parser is at least 25% faster with real-world data.
-
-
-2.0.0 (2012-08-08)
-------------------
-
-* VObject is now a separate project from SabreDAV. See the SabreDAV changelog
-  for version information before 2.0.
-* New: VObject library now uses PHP 5.3 namespaces.
-* New: It's possible to specify lists of parameters when constructing
-  properties.
-* New: made it easier to construct the FreeBusyGenerator.
-
-[iTip]: http://tools.ietf.org/html/rfc5546
diff --git a/vendor/sabre/vobject/lib/Property/Float.php b/vendor/sabre/vobject/lib/Property/Float.php
deleted file mode 100644
index 25bcd3db2..000000000
--- a/vendor/sabre/vobject/lib/Property/Float.php
+++ /dev/null
@@ -1,104 +0,0 @@
-<?php
-
-namespace Sabre\VObject\Property;
-
-use
-    Sabre\VObject\Property;
-
-/**
- * Float property
- *
- * This object represents FLOAT values. These can be 1 or more floating-point
- * numbers.
- *
- * @copyright Copyright (C) 2011-2015 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-class Float extends Property {
-
-    /**
-     * In case this is a multi-value property. This string will be used as a
-     * delimiter.
-     *
-     * @var string|null
-     */
-    public $delimiter = ';';
-
-    /**
-     * Sets a raw value coming from a mimedir (iCalendar/vCard) file.
-     *
-     * This has been 'unfolded', so only 1 line will be passed. Unescaping is
-     * not yet done, but parameters are not included.
-     *
-     * @param string $val
-     * @return void
-     */
-    public function setRawMimeDirValue($val) {
-
-        $val = explode($this->delimiter, $val);
-        foreach($val as &$item) {
-            $item = (float)$item;
-        }
-        $this->setParts($val);
-
-    }
-
-    /**
-     * Returns a raw mime-dir representation of the value.
-     *
-     * @return string
-     */
-    public function getRawMimeDirValue() {
-
-        return implode(
-            $this->delimiter,
-            $this->getParts()
-        );
-
-    }
-
-    /**
-     * Returns the type of value.
-     *
-     * This corresponds to the VALUE= parameter. Every property also has a
-     * 'default' valueType.
-     *
-     * @return string
-     */
-    public function getValueType() {
-
-        return "FLOAT";
-
-    }
-
-    /**
-     * Returns the value, in the format it should be encoded for json.
-     *
-     * This method must always return an array.
-     *
-     * @return array
-     */
-    public function getJsonValue() {
-
-        $val = array_map(
-            function($item) {
-
-                return (float)$item;
-
-            },
-            $this->getParts()
-        );
-
-        // Special-casing the GEO property.
-        //
-        // See:
-        // http://tools.ietf.org/html/draft-ietf-jcardcal-jcal-04#section-3.4.1.2
-        if ($this->name==='GEO') {
-            return array($val);
-        } else {
-            return $val;
-        }
-
-    }
-}
diff --git a/vendor/sabre/vobject/lib/Property/Integer.php b/vendor/sabre/vobject/lib/Property/Integer.php
deleted file mode 100644
index db000156f..000000000
--- a/vendor/sabre/vobject/lib/Property/Integer.php
+++ /dev/null
@@ -1,72 +0,0 @@
-<?php
-
-namespace Sabre\VObject\Property;
-
-use
-    Sabre\VObject\Property;
-
-/**
- * Integer property
- *
- * This object represents INTEGER values. These are always a single integer.
- * They may be preceeded by either + or -.
- *
- * @copyright Copyright (C) 2011-2015 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-class Integer extends Property {
-
-    /**
-     * Sets a raw value coming from a mimedir (iCalendar/vCard) file.
-     *
-     * This has been 'unfolded', so only 1 line will be passed. Unescaping is
-     * not yet done, but parameters are not included.
-     *
-     * @param string $val
-     * @return void
-     */
-    public function setRawMimeDirValue($val) {
-
-        $this->setValue((int)$val);
-
-    }
-
-    /**
-     * Returns a raw mime-dir representation of the value.
-     *
-     * @return string
-     */
-    public function getRawMimeDirValue() {
-
-        return $this->value;
-
-    }
-
-    /**
-     * Returns the type of value.
-     *
-     * This corresponds to the VALUE= parameter. Every property also has a
-     * 'default' valueType.
-     *
-     * @return string
-     */
-    public function getValueType() {
-
-        return "INTEGER";
-
-    }
-
-    /**
-     * Returns the value, in the format it should be encoded for json.
-     *
-     * This method must always return an array.
-     *
-     * @return array
-     */
-    public function getJsonValue() {
-
-        return array((int)$this->getValue());
-
-    }
-}
diff --git a/vendor/sabre/vobject/lib/RecurrenceIterator.php b/vendor/sabre/vobject/lib/RecurrenceIterator.php
deleted file mode 100644
index 92ea03ffe..000000000
--- a/vendor/sabre/vobject/lib/RecurrenceIterator.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-
-namespace Sabre\VObject;
-
-use Sabre\VObject\Recur\EventIterator;
-
-/**
- * RecurrenceIterator
- *
- * This class is deprecated. Use Sabre\VObject\Recur\EventIterator instead.
- * This class will be removed from a future version.
- *
- * @copyright Copyright (C) 2011-2015 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @deprecated
- * @license http://sabre.io/license Modified BSD License
- */
-class RecurrenceIterator extends EventIterator {
-
-
-}