Merge branch '4.6RC'4.6

30 files changed, 955 insertions, 1312 deletions

diff --git a/vendor/sabre/http/.gitignore b/vendor/sabre/http/.gitignore
index 8c97686fb..5f85ecc1b 100644
--- a/vendor/sabre/http/.gitignore
+++ b/vendor/sabre/http/.gitignore
@@ -6,10 +6,13 @@ composer.lock
 tests/cov/
 
 # Composer binaries
-bin/phpunit
-bin/phpcs
-bin/php-cs-fixer
-bin/sabre-cs-fixer
+bin/phpunit*
+bin/phpcs*
+bin/php-cs-fixer*
+bin/sabre-cs-fixer*
 
 # Vim
 .*.swp
+
+# development stuff
+.php_cs.cache
diff --git a/vendor/sabre/http/.php_cs.dist b/vendor/sabre/http/.php_cs.dist
new file mode 100644
index 000000000..8d61ee259
--- /dev/null
+++ b/vendor/sabre/http/.php_cs.dist
@@ -0,0 +1,12 @@
+<?php
+
+$config = PhpCsFixer\Config::create();
+$config->getFinder()
+    ->exclude('vendor')
+    ->in(__DIR__);
+$config->setRules([
+    '@PSR1' => true,
+    '@Symfony' =>true
+]);
+
+return $config;
\ No newline at end of file
diff --git a/vendor/sabre/http/.travis.yml b/vendor/sabre/http/.travis.yml
index 9e4964b9d..3b85d5f39 100644
--- a/vendor/sabre/http/.travis.yml
+++ b/vendor/sabre/http/.travis.yml
@@ -1,28 +1,41 @@
 language: php
+sudo: required
 php:
-  - 5.4
-  - 5.5
-  - 5.6
-  - 7
+  - 7.0
   - 7.1
-  - hhvm
+  - 7.2
+  - 7.3
+  - 7.4snapshot
+
+env:
+  global:
+    - RUN_PHPSTAN="FALSE"
+  matrix:
+    - PREFER_LOWEST="" WITH_COVERAGE="--coverage-clover=coverage.xml"
+    - PREFER_LOWEST="--prefer-lowest" $WITH_COVERAGE=""
 
 matrix:
+  include:
+    - name: 'PHPStan'
+      php: 7.2
+      env: RUN_PHPSTAN="TRUE"
   fast_finish: true
-  allow_failures:
-  - php: hhvm
 
-env:
-  matrix:
-    - PREFER_LOWEST=""
-    - PREFER_LOWEST="--prefer-lowest"
+cache:
+    directories:
+        - $HOME/.composer/cache
 
+install:
+  - if [ $RUN_PHPSTAN == "TRUE"  ]; then composer require --dev phpstan/phpstan; fi
 
 before_script:
-    - rm -f ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/xdebug.ini
-#    - composer self-update
-    - composer update --prefer-source $PREFER_LOWEST
+  - composer update --prefer-source $PREFER_LOWEST
+  - PHP_BIN=$(phpenv which php)
+  - sudo $PHP_BIN -S localhost:80 -t $TRAVIS_BUILD_DIR/tests/www 2>/dev/null &
 
 script:
-  - ./bin/phpunit --configuration tests/phpunit.xml
-  - ./bin/sabre-cs-fixer fix . --dry-run --diff
+  - if [ $RUN_PHPSTAN == "FALSE"  ]; then ./bin/phpunit --configuration tests/phpunit.xml $WITH_COVERAGE; fi
+  - if [ $RUN_PHPSTAN == "TRUE"  ]; then php ./bin/phpstan analyse -c phpstan.neon lib; fi
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/sabre/http/CHANGELOG.md b/vendor/sabre/http/CHANGELOG.md
index d3dd8b2d9..a087453fa 100644
--- a/vendor/sabre/http/CHANGELOG.md
+++ b/vendor/sabre/http/CHANGELOG.md
@@ -1,11 +1,61 @@
 ChangeLog
 =========
 
-4.2.4 (2018-02-23)
-------------------
+5.0.4 (2019-10-08)
+-------------------------
+
+* #133: Fix short Content-Range download - Regression from 5.0.3 (@phil-davis)
+
+5.0.3 (2019-10-08)
+-------------------------
+
+* #119: Significantly improve file download speed by enabling mmap based stream_copy_to_stream (@vfreex) 
+
+5.0.2 (2019-09-12)
+-------------------------
+
+* #125: Fix Strict Error if Response Body Empty (@WorksDev, @phil-davis) 
 
+5.0.1 (2019-09-11)
+-------------------------
+
+* #121: fix "Trying to access array offset on value of type bool" in 7.4 (@remicollet) 
+* #115: Reduce memory footprint when parsing HTTP result (@Gasol)
+* #114: Misc code improvements (@mrcnpdlk)
+* #111, #118: Added phpstan analysis (@DeepDiver1975, @staabm)
+* #107: Tested with php 7.3 (@DeepDiver1975)
+ 
+
+5.0.0 (2018-06-04)
+-------------------------
+
+* #99: Previous CURL opts are not persisted anymore (@christiaan)
+* Final release
+
+5.0.0-alpha1 (2018-02-16)
+-------------------------
+
+* Now requires PHP 7.0+.
+* Supports sabre/event 4.x and 5.x
+* Depends on sabre/uri 2.
+* hhvm is no longer supported starting this release.
+* #65: It's now possible to supply request/response bodies using a callback
+  functions. This allows very high-speed/low-memory responses to be created.
+  (@petrkotek).
+* Strict typing is used every where this is applicable.
+* Removed `URLUtil` class. It was deprecated a long time ago, and most of
+  its functions moved to the `sabre/uri` package.
+* Removed `Util` class. Most of its functions moved to the `functions.php`
+  file.
+* #68: The `$method` and `$uri` arguments when constructing a Request object
+  are now required.
+* When `Sapi::getRequest()` is called, we default to setting the HTTP Method
+  to `CLI`.
+* The HTTP response is now initialized with HTTP code `500` instead of `null`,
+  so if it's not changed, it will be emitted as 500.
 * #69: Sending `charset="UTF-8"` on Basic authentication challenges per
   [rfc7617][rfc7617].
+* #84: Added support for `SERVER_PROTOCOL HTTP/2.0` (@jens1o)
 
 
 4.2.3 (2017-06-12)
@@ -19,6 +69,7 @@ ChangeLog
 
 * #72: Handling clients that send invalid `Content-Length` headers.
 
+
 4.2.1 (2016-01-06)
 ------------------
 
diff --git a/vendor/sabre/http/README.md b/vendor/sabre/http/README.md
index ae03a796e..8159b4d49 100644
--- a/vendor/sabre/http/README.md
+++ b/vendor/sabre/http/README.md
@@ -1,7 +1,7 @@
 sabre/http
 ==========
 
-This library provides a toolkit to make working with the HTTP protocol easier.
+This library provides a toolkit to make working with the [HTTP protocol](https://tools.ietf.org/html/rfc2616) easier.
 
 Most PHP scripts run within a HTTP request but accessing information about the
 HTTP request is cumbersome at least.
@@ -30,8 +30,9 @@ Build status
 
 | branch | status |
 | ------ | ------ |
-| master | [![Build Status](https://travis-ci.org/fruux/sabre-http.svg?branch=master)](https://travis-ci.org/fruux/sabre-http) |
-| 3.0    | [![Build Status](https://travis-ci.org/fruux/sabre-http.svg?branch=3.0)](https://travis-ci.org/fruux/sabre-http) |
+| master | [![Build Status](https://travis-ci.org/sabre-io/http.svg?branch=master)](https://travis-ci.org/sabre-io/http) |
+| 4.2    | [![Build Status](https://travis-ci.org/sabre-io/http.svg?branch=4.2)](https://travis-ci.org/sabre-io/http) |
+| 3.0    | [![Build Status](https://travis-ci.org/sabre-io/http.svg?branch=3.0)](https://travis-ci.org/sabre-io/http) |
 
 Installation
 ------------
@@ -42,7 +43,7 @@ or edit a `composer.json` file, and make sure it contains something like this:
 ```json
 {
     "require" : {
-        "sabre/http" : "~3.0.0"
+        "sabre/http" : "~5.0.0"
     }
 }
 ```
@@ -571,7 +572,7 @@ function removeHeader($name);
 /**
  * Sets the HTTP version.
  *
- * Should be 1.0 or 1.1.
+ * Should be 1.0, 1.1 or 2.0.
  *
  * @param string $version
  * @return void
@@ -716,7 +717,7 @@ function removeHeader($name);
 /**
  * Sets the HTTP version.
  *
- * Should be 1.0 or 1.1.
+ * Should be 1.0, 1.1 or 2.0.
  *
  * @param string $version
  * @return void
diff --git a/vendor/sabre/http/composer.json b/vendor/sabre/http/composer.json
index 507d5d28d..851a08730 100644
--- a/vendor/sabre/http/composer.json
+++ b/vendor/sabre/http/composer.json
@@ -5,15 +5,15 @@
     "homepage" : "https://github.com/fruux/sabre-http",
     "license" : "BSD-3-Clause",
     "require" : {
-        "php"          : ">=5.4",
+        "php"          : "^7.0",
         "ext-mbstring" : "*",
         "ext-ctype"    : "*",
-        "sabre/event"  : ">=1.0.0,<4.0.0",
-        "sabre/uri"    : "~1.0"
+        "ext-curl"     : "*",
+        "sabre/event"  : ">=4.0 <6.0",
+        "sabre/uri"    : "^2.0"
     },
     "require-dev" : {
-        "phpunit/phpunit" : "~4.3",
-        "sabre/cs" : "~0.0.1"
+        "phpunit/phpunit" : "^6.0 || ^7.0"
     },
     "suggest" : {
         "ext-curl" : " to make http requests with the Client class"
diff --git a/vendor/sabre/http/lib/Auth/AWS.php b/vendor/sabre/http/lib/Auth/AWS.php
index 5e176646a..ffda3cf15 100644
--- a/vendor/sabre/http/lib/Auth/AWS.php
+++ b/vendor/sabre/http/lib/Auth/AWS.php
@@ -1,11 +1,13 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP\Auth;
 
-use Sabre\HTTP\Util;
+use Sabre\HTTP;
 
 /**
- * HTTP AWS Authentication handler
+ * HTTP AWS Authentication handler.
  *
  * Use this class to leverage amazon's AWS authentication header
  *
@@ -13,24 +15,24 @@ use Sabre\HTTP\Util;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class AWS extends AbstractAuth {
-
+class AWS extends AbstractAuth
+{
     /**
-     * The signature supplied by the HTTP client
+     * The signature supplied by the HTTP client.
      *
      * @var string
      */
     private $signature = null;
 
     /**
-     * The accesskey supplied by the HTTP client
+     * The accesskey supplied by the HTTP client.
      *
      * @var string
      */
     private $accessKey = null;
 
     /**
-     * An error code, if any
+     * An error code, if any.
      *
      * This value will be filled with one of the ERR_* constants
      *
@@ -45,47 +47,45 @@ class AWS extends AbstractAuth {
     const ERR_INVALIDSIGNATURE = 5;
 
     /**
-     * Gathers all information from the headers
+     * Gathers all information from the headers.
      *
      * This method needs to be called prior to anything else.
-     *
-     * @return bool
      */
-    function init() {
-
+    public function init(): bool
+    {
         $authHeader = $this->request->getHeader('Authorization');
+
+        if (null === $authHeader) {
+            $this->errorCode = self::ERR_NOAWSHEADER;
+
+            return false;
+        }
         $authHeader = explode(' ', $authHeader);
 
-        if ($authHeader[0] != 'AWS' || !isset($authHeader[1])) {
+        if ('AWS' !== $authHeader[0] || !isset($authHeader[1])) {
             $this->errorCode = self::ERR_NOAWSHEADER;
-             return false;
+
+            return false;
         }
 
         list($this->accessKey, $this->signature) = explode(':', $authHeader[1]);
 
         return true;
-
     }
 
     /**
-     * Returns the username for the request
-     *
-     * @return string
+     * Returns the username for the request.
      */
-    function getAccessKey() {
-
+    public function getAccessKey(): string
+    {
         return $this->accessKey;
-
     }
 
     /**
-     * Validates the signature based on the secretKey
-     *
-     * @param string $secretKey
-     * @return bool
+     * Validates the signature based on the secretKey.
      */
-    function validate($secretKey) {
-
+    public function validate(string $secretKey): bool
+    {
         $contentMD5 = $this->request->getHeader('Content-MD5');
 
         if ($contentMD5) {
@@ -93,57 +93,53 @@ class AWS extends AbstractAuth {
             $body = $this->request->getBody();
             $this->request->setBody($body);
 
-            if ($contentMD5 != base64_encode(md5($body, true))) {
+            if ($contentMD5 !== base64_encode(md5((string) $body, true))) {
                 // content-md5 header did not match md5 signature of body
                 $this->errorCode = self::ERR_MD5CHECKSUMWRONG;
+
                 return false;
             }
-
         }
 
-        if (!$requestDate = $this->request->getHeader('x-amz-date'))
+        if (!$requestDate = $this->request->getHeader('x-amz-date')) {
             $requestDate = $this->request->getHeader('Date');
+        }
 
-        if (!$this->validateRFC2616Date($requestDate))
+        if (!$this->validateRFC2616Date((string) $requestDate)) {
             return false;
+        }
 
         $amzHeaders = $this->getAmzHeaders();
 
         $signature = base64_encode(
             $this->hmacsha1($secretKey,
-                $this->request->getMethod() . "\n" .
-                $contentMD5 . "\n" .
-                $this->request->getHeader('Content-type') . "\n" .
-                $requestDate . "\n" .
-                $amzHeaders .
+                $this->request->getMethod()."\n".
+                $contentMD5."\n".
+                $this->request->getHeader('Content-type')."\n".
+                $requestDate."\n".
+                $amzHeaders.
                 $this->request->getUrl()
             )
         );
 
-        if ($this->signature != $signature) {
-
+        if ($this->signature !== $signature) {
             $this->errorCode = self::ERR_INVALIDSIGNATURE;
-            return false;
 
+            return false;
         }
 
         return true;
-
     }
 
-
     /**
-     * Returns an HTTP 401 header, forcing login
+     * Returns an HTTP 401 header, forcing login.
      *
      * This should be called when username and password are incorrect, or not supplied at all
-     *
-     * @return void
      */
-    function requireLogin() {
-
+    public function requireLogin()
+    {
         $this->response->addHeader('WWW-Authenticate', 'AWS');
         $this->response->setStatus(401);
-
     }
 
     /**
@@ -154,17 +150,15 @@ class AWS extends AbstractAuth {
      *
      * This function also makes sure the Date header is within 15 minutes of the operating
      * system date, to prevent replay attacks.
-     *
-     * @param string $dateHeader
-     * @return bool
      */
-    protected function validateRFC2616Date($dateHeader) {
-
-        $date = Util::parseHTTPDate($dateHeader);
+    protected function validateRFC2616Date(string $dateHeader): bool
+    {
+        $date = HTTP\parseDate($dateHeader);
 
         // Unknown format
         if (!$date) {
             $this->errorCode = self::ERR_INVALIDDATEFORMAT;
+
             return false;
         }
 
@@ -174,47 +168,40 @@ class AWS extends AbstractAuth {
         // We allow 15 minutes around the current date/time
         if ($date > $max || $date < $min) {
             $this->errorCode = self::ERR_REQUESTTIMESKEWED;
+
             return false;
         }
 
-        return $date;
-
+        return true;
     }
 
     /**
-     * Returns a list of AMZ headers
-     *
-     * @return string
+     * Returns a list of AMZ headers.
      */
-    protected function getAmzHeaders() {
-
+    protected function getAmzHeaders(): string
+    {
         $amzHeaders = [];
         $headers = $this->request->getHeaders();
         foreach ($headers as $headerName => $headerValue) {
-            if (strpos(strtolower($headerName), 'x-amz-') === 0) {
-                $amzHeaders[strtolower($headerName)] = str_replace(["\r\n"], [' '], $headerValue[0]) . "\n";
+            if (0 === strpos(strtolower($headerName), 'x-amz-')) {
+                $amzHeaders[strtolower($headerName)] = str_replace(["\r\n"], [' '], $headerValue[0])."\n";
             }
         }
         ksort($amzHeaders);
 
         $headerStr = '';
         foreach ($amzHeaders as $h => $v) {
-            $headerStr .= $h . ':' . $v;
+            $headerStr .= $h.':'.$v;
         }
 
         return $headerStr;
-
     }
 
     /**
-     * Generates an HMAC-SHA1 signature
-     *
-     * @param string $key
-     * @param string $message
-     * @return string
+     * Generates an HMAC-SHA1 signature.
      */
-    private function hmacsha1($key, $message) {
-
+    private function hmacsha1(string $key, string $message): string
+    {
         if (function_exists('hash_hmac')) {
             return hash_hmac('sha1', $message, $key, true);
         }
@@ -226,9 +213,8 @@ class AWS extends AbstractAuth {
         $key = str_pad($key, $blocksize, chr(0x00));
         $ipad = str_repeat(chr(0x36), $blocksize);
         $opad = str_repeat(chr(0x5c), $blocksize);
-        $hmac = pack('H*', sha1(($key ^ $opad) . pack('H*', sha1(($key ^ $ipad) . $message))));
-        return $hmac;
+        $hmac = pack('H*', sha1(($key ^ $opad).pack('H*', sha1(($key ^ $ipad).$message))));
 
+        return $hmac;
     }
-
 }
diff --git a/vendor/sabre/http/lib/Auth/AbstractAuth.php b/vendor/sabre/http/lib/Auth/AbstractAuth.php
index ae45b3ee2..ada6bf0f0 100644
--- a/vendor/sabre/http/lib/Auth/AbstractAuth.php
+++ b/vendor/sabre/http/lib/Auth/AbstractAuth.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP\Auth;
 
 use Sabre\HTTP\RequestInterface;
@@ -14,60 +16,50 @@ use Sabre\HTTP\ResponseInterface;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-abstract class AbstractAuth {
-
+abstract class AbstractAuth
+{
     /**
-     * Authentication realm
+     * Authentication realm.
      *
      * @var string
      */
     protected $realm;
 
     /**
-     * Request object
+     * Request object.
      *
      * @var RequestInterface
      */
     protected $request;
 
     /**
-     * Response object
+     * Response object.
      *
      * @var ResponseInterface
      */
     protected $response;
 
     /**
-     * Creates the object
-     *
-     * @param string $realm
-     * @return void
+     * Creates the object.
      */
-    function __construct($realm = 'SabreTooth', RequestInterface $request, ResponseInterface $response) {
-
+    public function __construct(string $realm = 'SabreTooth', RequestInterface $request, ResponseInterface $response)
+    {
         $this->realm = $realm;
         $this->request = $request;
         $this->response = $response;
-
     }
 
     /**
      * This method sends the needed HTTP header and statuscode (401) to force
      * the user to login.
-     *
-     * @return void
      */
-    abstract function requireLogin();
+    abstract public function requireLogin();
 
     /**
-     * Returns the HTTP realm
-     *
-     * @return string
+     * Returns the HTTP realm.
      */
-    function getRealm() {
-
+    public function getRealm(): string
+    {
         return $this->realm;
-
     }
-
 }
diff --git a/vendor/sabre/http/lib/Auth/Basic.php b/vendor/sabre/http/lib/Auth/Basic.php
index c263e3f9b..d04b4a811 100644
--- a/vendor/sabre/http/lib/Auth/Basic.php
+++ b/vendor/sabre/http/lib/Auth/Basic.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP\Auth;
 
 /**
@@ -15,25 +17,25 @@ namespace Sabre\HTTP\Auth;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Basic extends AbstractAuth {
-
+class Basic extends AbstractAuth
+{
     /**
      * This method returns a numeric array with a username and password as the
      * only elements.
      *
      * If no credentials were found, this method returns null.
      *
-     * @return null|array
+     * @return array|null
      */
-    function getCredentials() {
-
+    public function getCredentials()
+    {
         $auth = $this->request->getHeader('Authorization');
 
         if (!$auth) {
             return null;
         }
 
-        if (strtolower(substr($auth, 0, 6)) !== 'basic ') {
+        if ('basic ' !== strtolower(substr($auth, 0, 6))) {
             return null;
         }
 
@@ -44,20 +46,15 @@ class Basic extends AbstractAuth {
         }
 
         return $credentials;
-
     }
 
     /**
      * This method sends the needed HTTP header and statuscode (401) to force
      * the user to login.
-     *
-     * @return void
      */
-    function requireLogin() {
-
-        $this->response->addHeader('WWW-Authenticate', 'Basic realm="' . $this->realm . '", charset="UTF-8"');
+    public function requireLogin()
+    {
+        $this->response->addHeader('WWW-Authenticate', 'Basic realm="'.$this->realm.'", charset="UTF-8"');
         $this->response->setStatus(401);
-
     }
-
 }
diff --git a/vendor/sabre/http/lib/Auth/Bearer.php b/vendor/sabre/http/lib/Auth/Bearer.php
index eefdf11ee..988bb29d2 100644
--- a/vendor/sabre/http/lib/Auth/Bearer.php
+++ b/vendor/sabre/http/lib/Auth/Bearer.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP\Auth;
 
 /**
@@ -15,42 +17,37 @@ namespace Sabre\HTTP\Auth;
  * @author François Kooman (fkooman@tuxed.net)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Bearer extends AbstractAuth {
-
+class Bearer extends AbstractAuth
+{
     /**
      * This method returns a string with an access token.
      *
      * If no token was found, this method returns null.
      *
-     * @return null|string
+     * @return string|null
      */
-    function getToken() {
-
+    public function getToken()
+    {
         $auth = $this->request->getHeader('Authorization');
 
         if (!$auth) {
             return null;
         }
 
-        if (strtolower(substr($auth, 0, 7)) !== 'bearer ') {
+        if ('bearer ' !== strtolower(substr($auth, 0, 7))) {
             return null;
         }
 
         return substr($auth, 7);
-
     }
 
     /**
      * This method sends the needed HTTP header and statuscode (401) to force
      * authentication.
-     *
-     * @return void
      */
-    function requireLogin() {
-
-        $this->response->addHeader('WWW-Authenticate', 'Bearer realm="' . $this->realm . '"');
+    public function requireLogin()
+    {
+        $this->response->addHeader('WWW-Authenticate', 'Bearer realm="'.$this->realm.'"');
         $this->response->setStatus(401);
-
     }
-
 }
diff --git a/vendor/sabre/http/lib/Auth/Digest.php b/vendor/sabre/http/lib/Auth/Digest.php
index 4b3f0746f..dd35a0b74 100644
--- a/vendor/sabre/http/lib/Auth/Digest.php
+++ b/vendor/sabre/http/lib/Auth/Digest.php
@@ -1,12 +1,14 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP\Auth;
 
 use Sabre\HTTP\RequestInterface;
 use Sabre\HTTP\ResponseInterface;
 
 /**
- * HTTP Digest Authentication handler
+ * HTTP Digest Authentication handler.
  *
  * Use this class for easy http digest authentication.
  * Instructions:
@@ -27,10 +29,10 @@ use Sabre\HTTP\ResponseInterface;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Digest extends AbstractAuth {
-
+class Digest extends AbstractAuth
+{
     /**
-     * These constants are used in setQOP();
+     * These constants are used in setQOP();.
      */
     const QOP_AUTH = 1;
     const QOP_AUTHINT = 2;
@@ -42,28 +44,24 @@ class Digest extends AbstractAuth {
     protected $qop = self::QOP_AUTH;
 
     /**
-     * Initializes the object
+     * Initializes the object.
      */
-    function __construct($realm = 'SabreTooth', RequestInterface $request, ResponseInterface $response) {
-
+    public function __construct(string $realm = 'SabreTooth', RequestInterface $request, ResponseInterface $response)
+    {
         $this->nonce = uniqid();
         $this->opaque = md5($realm);
         parent::__construct($realm, $request, $response);
-
     }
 
     /**
-     * Gathers all information from the headers
+     * Gathers all information from the headers.
      *
      * This method needs to be called prior to anything else.
-     *
-     * @return void
      */
-    function init() {
-
+    public function init()
+    {
         $digest = $this->getDigest();
-        $this->digestParts = $this->parseDigest($digest);
-
+        $this->digestParts = $this->parseDigest((string) $digest);
     }
 
     /**
@@ -78,115 +76,101 @@ class Digest extends AbstractAuth {
      * QOP_AUTHINT ensures integrity of the request body, but this is not
      * supported by most HTTP clients. QOP_AUTHINT also requires the entire
      * request body to be md5'ed, which can put strains on CPU and memory.
-     *
-     * @param int $qop
-     * @return void
      */
-    function setQOP($qop) {
-
+    public function setQOP(int $qop)
+    {
         $this->qop = $qop;
-
     }
 
     /**
      * Validates the user.
      *
      * The A1 parameter should be md5($username . ':' . $realm . ':' . $password);
-     *
-     * @param string $A1
-     * @return bool
      */
-    function validateA1($A1) {
-
+    public function validateA1(string $A1): bool
+    {
         $this->A1 = $A1;
-        return $this->validate();
 
+        return $this->validate();
     }
 
     /**
      * Validates authentication through a password. The actual password must be provided here.
      * It is strongly recommended not store the password in plain-text and use validateA1 instead.
-     *
-     * @param string $password
-     * @return bool
      */
-    function validatePassword($password) {
+    public function validatePassword(string $password): bool
+    {
+        $this->A1 = md5($this->digestParts['username'].':'.$this->realm.':'.$password);
 
-        $this->A1 = md5($this->digestParts['username'] . ':' . $this->realm . ':' . $password);
         return $this->validate();
-
     }
 
     /**
-     * Returns the username for the request
+     * Returns the username for the request.
+     * Returns null if there were none.
      *
-     * @return string
+     * @return string|null
      */
-    function getUsername() {
-
-        return $this->digestParts['username'];
-
+    public function getUsername()
+    {
+        return $this->digestParts['username'] ?? null;
     }
 
     /**
-     * Validates the digest challenge
-     *
-     * @return bool
+     * Validates the digest challenge.
      */
-    protected function validate() {
+    protected function validate(): bool
+    {
+        if (!is_array($this->digestParts)) {
+            return false;
+        }
 
-        $A2 = $this->request->getMethod() . ':' . $this->digestParts['uri'];
+        $A2 = $this->request->getMethod().':'.$this->digestParts['uri'];
 
-        if ($this->digestParts['qop'] == 'auth-int') {
+        if ('auth-int' === $this->digestParts['qop']) {
             // Making sure we support this qop value
-            if (!($this->qop & self::QOP_AUTHINT)) return false;
+            if (!($this->qop & self::QOP_AUTHINT)) {
+                return false;
+            }
             // We need to add an md5 of the entire request body to the A2 part of the hash
             $body = $this->request->getBody($asString = true);
             $this->request->setBody($body);
-            $A2 .= ':' . md5($body);
-        } else {
-
-            // We need to make sure we support this qop value
-            if (!($this->qop & self::QOP_AUTH)) return false;
+            $A2 .= ':'.md5($body);
+        } elseif (!($this->qop & self::QOP_AUTH)) {
+            return false;
         }
 
         $A2 = md5($A2);
 
         $validResponse = md5("{$this->A1}:{$this->digestParts['nonce']}:{$this->digestParts['nc']}:{$this->digestParts['cnonce']}:{$this->digestParts['qop']}:{$A2}");
 
-        return $this->digestParts['response'] == $validResponse;
-
-
+        return $this->digestParts['response'] === $validResponse;
     }
 
     /**
-     * Returns an HTTP 401 header, forcing login
+     * Returns an HTTP 401 header, forcing login.
      *
      * This should be called when username and password are incorrect, or not supplied at all
-     *
-     * @return void
      */
-    function requireLogin() {
-
+    public function requireLogin()
+    {
         $qop = '';
         switch ($this->qop) {
-            case self::QOP_AUTH    :
+            case self::QOP_AUTH:
                 $qop = 'auth';
                 break;
-            case self::QOP_AUTHINT :
+            case self::QOP_AUTHINT:
                 $qop = 'auth-int';
                 break;
-            case self::QOP_AUTH | self::QOP_AUTHINT :
+            case self::QOP_AUTH | self::QOP_AUTHINT:
                 $qop = 'auth,auth-int';
                 break;
         }
 
-        $this->response->addHeader('WWW-Authenticate', 'Digest realm="' . $this->realm . '",qop="' . $qop . '",nonce="' . $this->nonce . '",opaque="' . $this->opaque . '"');
+        $this->response->addHeader('WWW-Authenticate', 'Digest realm="'.$this->realm.'",qop="'.$qop.'",nonce="'.$this->nonce.'",opaque="'.$this->opaque.'"');
         $this->response->setStatus(401);
-
     }
 
-
     /**
      * This method returns the full digest string.
      *
@@ -196,23 +180,20 @@ class Digest extends AbstractAuth {
      *
      * @return mixed
      */
-    function getDigest() {
-
+    public function getDigest()
+    {
         return $this->request->getHeader('Authorization');
-
     }
 
-
     /**
      * Parses the different pieces of the digest string into an array.
      *
      * This method returns false if an incomplete digest was supplied
      *
-     * @param string $digest
-     * @return mixed
+     * @return bool|array
      */
-    protected function parseDigest($digest) {
-
+    protected function parseDigest(string $digest)
+    {
         // protect against missing data
         $needed_parts = ['nonce' => 1, 'nc' => 1, 'cnonce' => 1, 'qop' => 1, 'username' => 1, 'uri' => 1, 'response' => 1];
         $data = [];
@@ -220,12 +201,10 @@ class Digest extends AbstractAuth {
         preg_match_all('@(\w+)=(?:(?:")([^"]+)"|([^\s,$]+))@', $digest, $matches, PREG_SET_ORDER);
 
         foreach ($matches as $m) {
-            $data[$m[1]] = $m[2] ? $m[2] : $m[3];
+            $data[$m[1]] = $m[2] ?: $m[3];
             unset($needed_parts[$m[1]]);
         }
 
         return $needed_parts ? false : $data;
-
     }
-
 }
diff --git a/vendor/sabre/http/lib/Client.php b/vendor/sabre/http/lib/Client.php
index 0810c4a25..48862e7da 100644
--- a/vendor/sabre/http/lib/Client.php
+++ b/vendor/sabre/http/lib/Client.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 use Sabre\Event\EventEmitter;
@@ -41,10 +43,10 @@ use Sabre\Uri;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Client extends EventEmitter {
-
+class Client extends EventEmitter
+{
     /**
-     * List of curl settings
+     * List of curl settings.
      *
      * @var array
      */
@@ -64,53 +66,61 @@ class Client extends EventEmitter {
      */
     protected $maxRedirects = 5;
 
+    protected $headerLinesMap = [];
+
     /**
      * Initializes the client.
-     *
-     * @return void
      */
-    function __construct() {
+    public function __construct()
+    {
+        // See https://github.com/sabre-io/http/pull/115#discussion_r241292068
+        // Preserve compatibility for sub-classes that implements their own method `parseCurlResult`
+        $separatedHeaders = __CLASS__ === get_class($this);
 
         $this->curlSettings = [
             CURLOPT_RETURNTRANSFER => true,
-            CURLOPT_HEADER         => true,
-            CURLOPT_NOBODY         => false,
-            CURLOPT_USERAGENT      => 'sabre-http/' . Version::VERSION . ' (http://sabre.io/)',
+            CURLOPT_NOBODY => false,
+            CURLOPT_USERAGENT => 'sabre-http/'.Version::VERSION.' (http://sabre.io/)',
         ];
+        if ($separatedHeaders) {
+            $this->curlSettings[CURLOPT_HEADERFUNCTION] = [$this, 'receiveCurlHeader'];
+        } else {
+            $this->curlSettings[CURLOPT_HEADER] = true;
+        }
+    }
+
+    protected function receiveCurlHeader($curlHandle, $headerLine)
+    {
+        $this->headerLinesMap[(int) $curlHandle][] = $headerLine;
 
+        return strlen($headerLine);
     }
 
     /**
      * Sends a request to a HTTP server, and returns a response.
-     *
-     * @param RequestInterface $request
-     * @return ResponseInterface
      */
-    function send(RequestInterface $request) {
-
+    public function send(RequestInterface $request): ResponseInterface
+    {
         $this->emit('beforeRequest', [$request]);
 
         $retryCount = 0;
         $redirects = 0;
 
         do {
-
             $doRedirect = false;
             $retry = false;
 
             try {
-
                 $response = $this->doRequest($request);
 
-                $code = (int)$response->getStatus();
+                $code = $response->getStatus();
 
                 // We are doing in-PHP redirects, because curl's
                 // FOLLOW_LOCATION throws errors when PHP is configured with
                 // open_basedir.
                 //
                 // https://github.com/fruux/sabre-http/issues/12
-                if (in_array($code, [301, 302, 307, 308]) && $redirects < $this->maxRedirects) {
-
+                if ($redirects < $this->maxRedirects && in_array($code, [301, 302, 307, 308])) {
                     $oldLocation = $request->getUrl();
 
                     // Creating a new instance of the request object.
@@ -123,20 +133,15 @@ class Client extends EventEmitter {
                     ));
 
                     $doRedirect = true;
-                    $redirects++;
-
+                    ++$redirects;
                 }
 
                 // This was a HTTP error
                 if ($code >= 400) {
-
                     $this->emit('error', [$request, $response, &$retry, $retryCount]);
-                    $this->emit('error:' . $code, [$request, $response, &$retry, $retryCount]);
-
+                    $this->emit('error:'.$code, [$request, $response, &$retry, $retryCount]);
                 }
-
             } catch (ClientException $e) {
-
                 $this->emit('exception', [$request, $e, &$retry, $retryCount]);
 
                 // If retry was still set to false, it means no event handler
@@ -145,13 +150,11 @@ class Client extends EventEmitter {
                 if (!$retry) {
                     throw $e;
                 }
-
             }
 
             if ($retry) {
-                $retryCount++;
+                ++$retryCount;
             }
-
         } while ($retry || $doRedirect);
 
         $this->emit('afterRequest', [$request, $response]);
@@ -161,7 +164,6 @@ class Client extends EventEmitter {
         }
 
         return $response;
-
     }
 
     /**
@@ -172,32 +174,23 @@ class Client extends EventEmitter {
      *
      * After calling sendAsync, you must therefore occasionally call the poll()
      * method, or wait().
-     *
-     * @param RequestInterface $request
-     * @param callable $success
-     * @param callable $error
-     * @return void
      */
-    function sendAsync(RequestInterface $request, callable $success = null, callable $error = null) {
-
+    public function sendAsync(RequestInterface $request, callable $success = null, callable $error = null)
+    {
         $this->emit('beforeRequest', [$request]);
         $this->sendAsyncInternal($request, $success, $error);
         $this->poll();
-
     }
 
-
     /**
      * This method checks if any http requests have gotten results, and if so,
      * call the appropriate success or error handlers.
      *
      * This method will return true if there are still requests waiting to
      * return, and false if all the work is done.
-     *
-     * @return bool
      */
-    function poll() {
-
+    public function poll(): bool
+    {
         // nothing to do?
         if (!$this->curlMultiMap) {
             return false;
@@ -208,10 +201,10 @@ class Client extends EventEmitter {
                 $this->curlMultiHandle,
                 $stillRunning
             );
-        } while ($r === CURLM_CALL_MULTI_PERFORM);
+        } while (CURLM_CALL_MULTI_PERFORM === $r);
 
+        $messagesInQueue = 0;
         do {
-
             messageQueue:
 
             $status = curl_multi_info_read(
@@ -219,26 +212,25 @@ class Client extends EventEmitter {
                 $messagesInQueue
             );
 
-            if ($status && $status['msg'] === CURLMSG_DONE) {
-
-                $resourceId = intval($status['handle']);
+            if ($status && CURLMSG_DONE === $status['msg']) {
+                $resourceId = (int) $status['handle'];
                 list(
                     $request,
                     $successCallback,
                     $errorCallback,
-                    $retryCount,
-                ) = $this->curlMultiMap[$resourceId];
+                    $retryCount) = $this->curlMultiMap[$resourceId];
                 unset($this->curlMultiMap[$resourceId]);
-                $curlResult = $this->parseCurlResult(curl_multi_getcontent($status['handle']), $status['handle']);
-                $retry = false;
 
-                if ($curlResult['status'] === self::STATUS_CURLERROR) {
+                $curlHandle = $status['handle'];
+                $curlResult = $this->parseResponse(curl_multi_getcontent($curlHandle), $curlHandle);
+                $retry = false;
 
+                if (self::STATUS_CURLERROR === $curlResult['status']) {
                     $e = new ClientException($curlResult['curl_errmsg'], $curlResult['curl_errno']);
                     $this->emit('exception', [$request, $e, &$retry, $retryCount]);
 
                     if ($retry) {
-                        $retryCount++;
+                        ++$retryCount;
                         $this->sendAsyncInternal($request, $successCallback, $errorCallback, $retryCount);
                         goto messageQueue;
                     }
@@ -248,18 +240,14 @@ class Client extends EventEmitter {
                     if ($errorCallback) {
                         $errorCallback($curlResult);
                     }
-
-                } elseif ($curlResult['status'] === self::STATUS_HTTPERROR) {
-
+                } elseif (self::STATUS_HTTPERROR === $curlResult['status']) {
                     $this->emit('error', [$request, $curlResult['response'], &$retry, $retryCount]);
-                    $this->emit('error:' . $curlResult['http_code'], [$request, $curlResult['response'], &$retry, $retryCount]);
+                    $this->emit('error:'.$curlResult['http_code'], [$request, $curlResult['response'], &$retry, $retryCount]);
 
                     if ($retry) {
-
-                        $retryCount++;
+                        ++$retryCount;
                         $this->sendAsyncInternal($request, $successCallback, $errorCallback, $retryCount);
                         goto messageQueue;
-
                     }
 
                     $curlResult['request'] = $request;
@@ -267,37 +255,29 @@ class Client extends EventEmitter {
                     if ($errorCallback) {
                         $errorCallback($curlResult);
                     }
-
                 } else {
-
                     $this->emit('afterRequest', [$request, $curlResult['response']]);
 
                     if ($successCallback) {
                         $successCallback($curlResult['response']);
                     }
-
                 }
             }
-
         } while ($messagesInQueue > 0);
 
         return count($this->curlMultiMap) > 0;
-
     }
 
     /**
      * Processes every HTTP request in the queue, and waits till they are all
      * completed.
-     *
-     * @return void
      */
-    function wait() {
-
+    public function wait()
+    {
         do {
             curl_multi_select($this->curlMultiHandle);
             $stillRunning = $this->poll();
         } while ($stillRunning);
-
     }
 
     /**
@@ -309,14 +289,10 @@ class Client extends EventEmitter {
      *
      * This only works for the send() method. Throwing exceptions for
      * sendAsync() is not supported.
-     *
-     * @param bool $throwExceptions
-     * @return void
      */
-    function setThrowExceptions($throwExceptions) {
-
+    public function setThrowExceptions(bool $throwExceptions)
+    {
         $this->throwExceptions = $throwExceptions;
-
     }
 
     /**
@@ -324,40 +300,34 @@ class Client extends EventEmitter {
      *
      * These settings will be included in every HTTP request.
      *
-     * @param int $name
      * @param mixed $value
-     * @return void
      */
-    function addCurlSetting($name, $value) {
-
+    public function addCurlSetting(int $name, $value)
+    {
         $this->curlSettings[$name] = $value;
-
     }
 
     /**
      * This method is responsible for performing a single request.
-     *
-     * @param RequestInterface $request
-     * @return ResponseInterface
      */
-    protected function doRequest(RequestInterface $request) {
-
+    protected function doRequest(RequestInterface $request): ResponseInterface
+    {
         $settings = $this->createCurlSettingsArray($request);
 
         if (!$this->curlHandle) {
             $this->curlHandle = curl_init();
+        } else {
+            curl_reset($this->curlHandle);
         }
 
         curl_setopt_array($this->curlHandle, $settings);
         $response = $this->curlExec($this->curlHandle);
-        $response = $this->parseCurlResult($response, $this->curlHandle);
-
-        if ($response['status'] === self::STATUS_CURLERROR) {
+        $response = $this->parseResponse($response, $this->curlHandle);
+        if (self::STATUS_CURLERROR === $response['status']) {
             throw new ClientException($response['curl_errmsg'], $response['curl_errno']);
         }
 
         return $response['response'];
-
     }
 
     /**
@@ -389,28 +359,21 @@ class Client extends EventEmitter {
 
     /**
      * Turns a RequestInterface object into an array with settings that can be
-     * fed to curl_setopt
-     *
-     * @param RequestInterface $request
-     * @return array
+     * fed to curl_setopt.
      */
-    protected function createCurlSettingsArray(RequestInterface $request) {
-
+    protected function createCurlSettingsArray(RequestInterface $request): array
+    {
         $settings = $this->curlSettings;
 
         switch ($request->getMethod()) {
-            case 'HEAD' :
+            case 'HEAD':
                 $settings[CURLOPT_NOBODY] = true;
                 $settings[CURLOPT_CUSTOMREQUEST] = 'HEAD';
-                $settings[CURLOPT_POSTFIELDS] = '';
-                $settings[CURLOPT_PUT] = false;
                 break;
-            case 'GET' :
+            case 'GET':
                 $settings[CURLOPT_CUSTOMREQUEST] = 'GET';
-                $settings[CURLOPT_POSTFIELDS] = '';
-                $settings[CURLOPT_PUT] = false;
                 break;
-            default :
+            default:
                 $body = $request->getBody();
                 if (is_resource($body)) {
                     // This needs to be set to PUT, regardless of the actual
@@ -422,20 +385,17 @@ class Client extends EventEmitter {
                     // For security we cast this to a string. If somehow an array could
                     // be passed here, it would be possible for an attacker to use @ to
                     // post local files.
-                    $settings[CURLOPT_POSTFIELDS] = (string)$body;
+                    $settings[CURLOPT_POSTFIELDS] = (string) $body;
                 }
                 $settings[CURLOPT_CUSTOMREQUEST] = $request->getMethod();
                 break;
-
         }
 
         $nHeaders = [];
         foreach ($request->getHeaders() as $key => $values) {
-
             foreach ($values as $value) {
-                $nHeaders[] = $key . ': ' . $value;
+                $nHeaders[] = $key.': '.$value;
             }
-
         }
         $settings[CURLOPT_HTTPHEADER] = $nHeaders;
         $settings[CURLOPT_URL] = $request->getUrl();
@@ -449,13 +409,32 @@ class Client extends EventEmitter {
         }
 
         return $settings;
-
     }
 
     const STATUS_SUCCESS = 0;
     const STATUS_CURLERROR = 1;
     const STATUS_HTTPERROR = 2;
 
+    private function parseResponse(string $response, $curlHandle): array
+    {
+        $settings = $this->curlSettings;
+        $separatedHeaders = isset($settings[CURLOPT_HEADERFUNCTION]) && (bool) $settings[CURLOPT_HEADERFUNCTION];
+
+        if ($separatedHeaders) {
+            $resourceId = (int) $curlHandle;
+            if (isset($this->headerLinesMap[$resourceId])) {
+                $headers = $this->headerLinesMap[$resourceId];
+            } else {
+                $headers = [];
+            }
+            $response = $this->parseCurlResponse($headers, $response, $curlHandle);
+        } else {
+            $response = $this->parseCurlResult($response, $curlHandle);
+        }
+
+        return $response;
+    }
+
     /**
      * Parses the result of a curl call in a format that's a bit more
      * convenient to work with.
@@ -471,12 +450,67 @@ class Client extends EventEmitter {
      *   * http_code - HTTP status code, as an int. Only set if Only set if
      *                 status is STATUS_SUCCESS, or STATUS_HTTPERROR
      *
-     * @param string $response
+     * @param array    $headerLines
+     * @param string   $body
      * @param resource $curlHandle
-     * @return Response
      */
-    protected function parseCurlResult($response, $curlHandle) {
+    protected function parseCurlResponse(array $headerLines, string $body, $curlHandle): array
+    {
+        list(
+            $curlInfo,
+            $curlErrNo,
+            $curlErrMsg
+        ) = $this->curlStuff($curlHandle);
 
+        if ($curlErrNo) {
+            return [
+                'status' => self::STATUS_CURLERROR,
+                'curl_errno' => $curlErrNo,
+                'curl_errmsg' => $curlErrMsg,
+            ];
+        }
+
+        $response = new Response();
+        $response->setStatus($curlInfo['http_code']);
+        $response->setBody($body);
+
+        foreach ($headerLines as $header) {
+            $parts = explode(':', $header, 2);
+            if (2 === count($parts)) {
+                $response->addHeader(trim($parts[0]), trim($parts[1]));
+            }
+        }
+
+        $httpCode = $response->getStatus();
+
+        return [
+            'status' => $httpCode >= 400 ? self::STATUS_HTTPERROR : self::STATUS_SUCCESS,
+            'response' => $response,
+            'http_code' => $httpCode,
+        ];
+    }
+
+    /**
+     * Parses the result of a curl call in a format that's a bit more
+     * convenient to work with.
+     *
+     * The method returns an array with the following elements:
+     *   * status - one of the 3 STATUS constants.
+     *   * curl_errno - A curl error number. Only set if status is
+     *                  STATUS_CURLERROR.
+     *   * curl_errmsg - A current error message. Only set if status is
+     *                   STATUS_CURLERROR.
+     *   * response - Response object. Only set if status is STATUS_SUCCESS, or
+     *                STATUS_HTTPERROR.
+     *   * http_code - HTTP status code, as an int. Only set if Only set if
+     *                 status is STATUS_SUCCESS, or STATUS_HTTPERROR
+     *
+     * @deprecated Use parseCurlResponse instead
+     *
+     * @param resource $curlHandle
+     */
+    protected function parseCurlResult(string $response, $curlHandle): array
+    {
         list(
             $curlInfo,
             $curlErrNo,
@@ -485,8 +519,8 @@ class Client extends EventEmitter {
 
         if ($curlErrNo) {
             return [
-                'status'      => self::STATUS_CURLERROR,
-                'curl_errno'  => $curlErrNo,
+                'status' => self::STATUS_CURLERROR,
+                'curl_errno' => $curlErrNo,
                 'curl_errmsg' => $curlErrMsg,
             ];
         }
@@ -495,7 +529,7 @@ class Client extends EventEmitter {
         // In the case of 204 No Content, strlen($response) == $curlInfo['header_size].
         // This will cause substr($response, $curlInfo['header_size']) return FALSE instead of NULL
         // An exception will be thrown when calling getBodyAsString then
-        $responseBody = substr($response, $curlInfo['header_size']) ?: null;
+        $responseBody = substr($response, $curlInfo['header_size']) ?: '';
 
         unset($response);
 
@@ -510,26 +544,7 @@ class Client extends EventEmitter {
         // Splitting headers
         $headerBlob = explode("\r\n", $headerBlob);
 
-        $response = new Response();
-        $response->setStatus($curlInfo['http_code']);
-
-        foreach ($headerBlob as $header) {
-            $parts = explode(':', $header, 2);
-            if (count($parts) == 2) {
-                $response->addHeader(trim($parts[0]), trim($parts[1]));
-            }
-        }
-
-        $response->setBody($responseBody);
-
-        $httpCode = intval($response->getStatus());
-
-        return [
-            'status'    => $httpCode >= 400 ? self::STATUS_HTTPERROR : self::STATUS_SUCCESS,
-            'response'  => $response,
-            'http_code' => $httpCode,
-        ];
-
+        return $this->parseCurlResponse($headerBlob, $responseBody, $curlHandle);
     }
 
     /**
@@ -537,14 +552,9 @@ class Client extends EventEmitter {
      *
      * We keep this in a separate method, so we can call it without triggering
      * the beforeRequest event and don't do the poll().
-     *
-     * @param RequestInterface $request
-     * @param callable $success
-     * @param callable $error
-     * @param int $retryCount
      */
-    protected function sendAsyncInternal(RequestInterface $request, callable $success, callable $error, $retryCount = 0) {
-
+    protected function sendAsyncInternal(RequestInterface $request, callable $success, callable $error, int $retryCount = 0)
+    {
         if (!$this->curlMultiHandle) {
             $this->curlMultiHandle = curl_multi_init();
         }
@@ -554,29 +564,36 @@ class Client extends EventEmitter {
             $this->createCurlSettingsArray($request)
         );
         curl_multi_add_handle($this->curlMultiHandle, $curl);
-        $this->curlMultiMap[intval($curl)] = [
+
+        $resourceId = (int) $curl;
+        $this->headerLinesMap[$resourceId] = [];
+        $this->curlMultiMap[$resourceId] = [
             $request,
             $success,
             $error,
-            $retryCount
+            $retryCount,
         ];
-
     }
 
     // @codeCoverageIgnoreStart
 
     /**
-     * Calls curl_exec
+     * Calls curl_exec.
      *
      * This method exists so it can easily be overridden and mocked.
      *
      * @param resource $curlHandle
-     * @return string
      */
-    protected function curlExec($curlHandle) {
+    protected function curlExec($curlHandle): string
+    {
+        $this->headerLinesMap[(int) $curlHandle] = [];
 
-        return curl_exec($curlHandle);
+        $result = curl_exec($curlHandle);
+        if (false === $result) {
+            $result = '';
+        }
 
+        return $result;
     }
 
     /**
@@ -585,17 +602,15 @@ class Client extends EventEmitter {
      * This method exists so it can easily be overridden and mocked.
      *
      * @param resource $curlHandle
-     * @return array
      */
-    protected function curlStuff($curlHandle) {
-
+    protected function curlStuff($curlHandle): array
+    {
         return [
             curl_getinfo($curlHandle),
             curl_errno($curlHandle),
             curl_error($curlHandle),
         ];
-
     }
-    // @codeCoverageIgnoreEnd
 
+    // @codeCoverageIgnoreEnd
 }
diff --git a/vendor/sabre/http/lib/ClientException.php b/vendor/sabre/http/lib/ClientException.php
index 69631f44e..2ca4a28e0 100644
--- a/vendor/sabre/http/lib/ClientException.php
+++ b/vendor/sabre/http/lib/ClientException.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
@@ -10,6 +12,6 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class ClientException extends \Exception {
-
+class ClientException extends \Exception
+{
 }
diff --git a/vendor/sabre/http/lib/ClientHttpException.php b/vendor/sabre/http/lib/ClientHttpException.php
index 2923ef3b5..116ca1f79 100644
--- a/vendor/sabre/http/lib/ClientHttpException.php
+++ b/vendor/sabre/http/lib/ClientHttpException.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
@@ -12,47 +14,37 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class ClientHttpException extends \Exception implements HttpException {
-
+class ClientHttpException extends \Exception implements HttpException
+{
     /**
-     * Response object
+     * Response object.
      *
      * @var ResponseInterface
      */
     protected $response;
 
     /**
-     * Constructor
-     *
-     * @param ResponseInterface $response
+     * Constructor.
      */
-    function __construct(ResponseInterface $response) {
-
+    public function __construct(ResponseInterface $response)
+    {
         $this->response = $response;
         parent::__construct($response->getStatusText(), $response->getStatus());
-
     }
 
     /**
      * The http status code for the error.
-     *
-     * @return int
      */
-    function getHttpStatus() {
-
+    public function getHttpStatus(): int
+    {
         return $this->response->getStatus();
-
     }
 
     /**
      * Returns the full response object.
-     *
-     * @return ResponseInterface
      */
-    function getResponse() {
-
+    public function getResponse(): ResponseInterface
+    {
         return $this->response;
-
     }
-
 }
diff --git a/vendor/sabre/http/lib/HttpException.php b/vendor/sabre/http/lib/HttpException.php
index 1303dec97..80b3ae665 100644
--- a/vendor/sabre/http/lib/HttpException.php
+++ b/vendor/sabre/http/lib/HttpException.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
@@ -15,8 +17,8 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-interface HttpException {
-
+interface HttpException
+{
     /**
      * The http status code for the error.
      *
@@ -25,6 +27,5 @@ interface HttpException {
      *
      * @return string|null
      */
-    function getHttpStatus();
-
+    public function getHttpStatus();
 }
diff --git a/vendor/sabre/http/lib/Message.php b/vendor/sabre/http/lib/Message.php
index 45bd18398..fc34f8d7f 100644
--- a/vendor/sabre/http/lib/Message.php
+++ b/vendor/sabre/http/lib/Message.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
@@ -11,26 +13,26 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-abstract class Message implements MessageInterface {
-
+abstract class Message implements MessageInterface
+{
     /**
-     * Request body
+     * Request body.
      *
-     * This should be a stream resource
+     * This should be a stream resource, string or a callback writing the body to php://output
      *
-     * @var resource
+     * @var resource|string|callable
      */
     protected $body;
 
     /**
-     * Contains the list of HTTP headers
+     * Contains the list of HTTP headers.
      *
      * @var array
      */
     protected $headers = [];
 
     /**
-     * HTTP message version (1.0 or 1.1)
+     * HTTP message version (1.0, 1.1 or 2.0).
      *
      * @var string
      */
@@ -44,17 +46,21 @@ abstract class Message implements MessageInterface {
      *
      * @return resource
      */
-    function getBodyAsStream() {
-
+    public function getBodyAsStream()
+    {
         $body = $this->getBody();
-        if (is_string($body) || is_null($body)) {
+        if (is_callable($this->body)) {
+            $body = $this->getBodyAsString();
+        }
+        if (is_string($body) || null === $body) {
             $stream = fopen('php://temp', 'r+');
-            fwrite($stream, $body);
+            fwrite($stream, (string) $body);
             rewind($stream);
+
             return $stream;
         }
-        return $body;
 
+        return $body;
     }
 
     /**
@@ -62,77 +68,76 @@ abstract class Message implements MessageInterface {
      *
      * Note that because the underlying data may be based on a stream, this
      * method could only work correctly the first time.
-     *
-     * @return string
      */
-    function getBodyAsString() {
-
+    public function getBodyAsString(): string
+    {
         $body = $this->getBody();
         if (is_string($body)) {
             return $body;
         }
-        if (is_null($body)) {
+        if (null === $body) {
             return '';
         }
+        if (is_callable($body)) {
+            ob_start();
+            $body();
+
+            return ob_get_clean();
+        }
+        /**
+         * @var string|int|null
+         */
         $contentLength = $this->getHeader('Content-Length');
         if (is_int($contentLength) || ctype_digit($contentLength)) {
-            return stream_get_contents($body, $contentLength);
-        } else {
-            return stream_get_contents($body);
+            return stream_get_contents($body, (int) $contentLength);
         }
+
+        return stream_get_contents($body);
     }
 
     /**
      * Returns the message body, as it's internal representation.
      *
-     * This could be either a string or a stream.
+     * This could be either a string, a stream or a callback writing the body to php://output.
      *
-     * @return resource|string
+     * @return resource|string|callable
      */
-    function getBody() {
-
+    public function getBody()
+    {
         return $this->body;
-
     }
 
     /**
-     * Replaces the body resource with a new stream or string.
+     * Replaces the body resource with a new stream, string or a callback writing the body to php://output.
      *
-     * @param resource|string $body
+     * @param resource|string|callable $body
      */
-    function setBody($body) {
-
+    public function setBody($body)
+    {
         $this->body = $body;
-
     }
 
     /**
      * Returns all the HTTP headers as an array.
      *
      * Every header is returned as an array, with one or more values.
-     *
-     * @return array
      */
-    function getHeaders() {
-
+    public function getHeaders(): array
+    {
         $result = [];
         foreach ($this->headers as $headerInfo) {
             $result[$headerInfo[0]] = $headerInfo[1];
         }
-        return $result;
 
+        return $result;
     }
 
     /**
      * Will return true or false, depending on if a HTTP header exists.
-     *
-     * @param string $name
-     * @return bool
      */
-    function hasHeader($name) {
-
+    public function hasHeader(string $name): bool
+    {
         return isset($this->headers[strtolower($name)]);
-
     }
 
     /**
@@ -148,18 +153,17 @@ abstract class Message implements MessageInterface {
      * `Set-Cookie` cannot be logically combined with a comma. In those cases
      * you *should* use getHeaderAsArray().
      *
-     * @param string $name
      * @return string|null
      */
-    function getHeader($name) {
-
+    public function getHeader(string $name)
+    {
         $name = strtolower($name);
 
         if (isset($this->headers[$name])) {
             return implode(',', $this->headers[$name][1]);
         }
-        return null;
 
+        return null;
     }
 
     /**
@@ -170,11 +174,10 @@ abstract class Message implements MessageInterface {
      *
      * If the header did not exists, this method will return an empty array.
      *
-     * @param string $name
      * @return string[]
      */
-    function getHeaderAsArray($name) {
-
+    public function getHeaderAsArray(string $name): array
+    {
         $name = strtolower($name);
 
         if (isset($this->headers[$name])) {
@@ -182,7 +185,6 @@ abstract class Message implements MessageInterface {
         }
 
         return [];
-
     }
 
     /**
@@ -192,14 +194,11 @@ abstract class Message implements MessageInterface {
      *
      * If the header already existed, it will be overwritten.
      *
-     * @param string $name
      * @param string|string[] $value
-     * @return void
      */
-    function setHeader($name, $value) {
-
-        $this->headers[strtolower($name)] = [$name, (array)$value];
-
+    public function setHeader(string $name, $value)
+    {
+        $this->headers[strtolower($name)] = [$name, (array) $value];
     }
 
     /**
@@ -209,16 +208,12 @@ abstract class Message implements MessageInterface {
      * should be specified as either a string or an array.
      *
      * Any header that already existed will be overwritten.
-     *
-     * @param array $headers
-     * @return void
      */
-    function setHeaders(array $headers) {
-
+    public function setHeaders(array $headers)
+    {
         foreach ($headers as $name => $value) {
             $this->setHeader($name, $value);
         }
-
     }
 
     /**
@@ -228,77 +223,62 @@ abstract class Message implements MessageInterface {
      * another value. Individual values can be retrieved with
      * getHeadersAsArray.
      *
-     * @param string $name
-     * @param string $value
-     * @return void
+     * @param string|string[] $value
      */
-    function addHeader($name, $value) {
-
+    public function addHeader(string $name, $value)
+    {
         $lName = strtolower($name);
         if (isset($this->headers[$lName])) {
             $this->headers[$lName][1] = array_merge(
                 $this->headers[$lName][1],
-                (array)$value
+                (array) $value
             );
         } else {
             $this->headers[$lName] = [
                 $name,
-                (array)$value
+                (array) $value,
             ];
         }
-
     }
 
     /**
      * Adds a new set of HTTP headers.
      *
      * Any existing headers will not be overwritten.
-     *
-     * @param array $headers
-     * @return void
      */
-    function addHeaders(array $headers) {
-
+    public function addHeaders(array $headers)
+    {
         foreach ($headers as $name => $value) {
             $this->addHeader($name, $value);
         }
-
     }
 
-
     /**
      * Removes a HTTP header.
      *
      * The specified header name must be treated as case-insensitive.
      * This method should return true if the header was successfully deleted,
      * and false if the header did not exist.
-     *
-     * @param string $name
-     * @return bool
      */
-    function removeHeader($name) {
-
+    public function removeHeader(string $name): bool
+    {
         $name = strtolower($name);
         if (!isset($this->headers[$name])) {
             return false;
         }
         unset($this->headers[$name]);
-        return true;
 
+        return true;
     }
 
     /**
      * Sets the HTTP version.
      *
-     * Should be 1.0 or 1.1.
-     *
-     * @param string $version
-     * @return void
+     * Should be 1.0, 1.1 or 2.0.
      */
-    function setHttpVersion($version) {
-
+    public function setHttpVersion(string $version)
+    {
         $this->httpVersion = $version;
-
     }
 
     /**
@@ -306,9 +286,8 @@ abstract class Message implements MessageInterface {
      *
      * @return string
      */
-    function getHttpVersion() {
-
+    public function getHttpVersion(): string
+    {
         return $this->httpVersion;
-
     }
 }
diff --git a/vendor/sabre/http/lib/MessageDecoratorTrait.php b/vendor/sabre/http/lib/MessageDecoratorTrait.php
index 1cb32da22..d5504ac78 100644
--- a/vendor/sabre/http/lib/MessageDecoratorTrait.php
+++ b/vendor/sabre/http/lib/MessageDecoratorTrait.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
@@ -13,8 +15,8 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-trait MessageDecoratorTrait {
-
+trait MessageDecoratorTrait
+{
     /**
      * The inner request object.
      *
@@ -32,10 +34,9 @@ trait MessageDecoratorTrait {
      *
      * @return resource
      */
-    function getBodyAsStream() {
-
+    public function getBodyAsStream()
+    {
         return $this->inner->getBodyAsStream();
-
     }
 
     /**
@@ -43,13 +44,10 @@ trait MessageDecoratorTrait {
      *
      * Note that because the underlying data may be based on a stream, this
      * method could only work correctly the first time.
-     *
-     * @return string
      */
-    function getBodyAsString() {
-
+    public function getBodyAsString(): string
+    {
         return $this->inner->getBodyAsString();
-
     }
 
     /**
@@ -59,47 +57,37 @@ trait MessageDecoratorTrait {
      *
      * @return resource|string
      */
-    function getBody() {
-
+    public function getBody()
+    {
         return $this->inner->getBody();
-
     }
 
     /**
      * Updates the body resource with a new stream.
      *
-     * @param resource $body
-     * @return void
+     * @param resource|string|callable $body
      */
-    function setBody($body) {
-
+    public function setBody($body)
+    {
         $this->inner->setBody($body);
-
     }
 
     /**
      * Returns all the HTTP headers as an array.
      *
      * Every header is returned as an array, with one or more values.
-     *
-     * @return array
      */
-    function getHeaders() {
-
+    public function getHeaders(): array
+    {
         return $this->inner->getHeaders();
-
     }
 
     /**
      * Will return true or false, depending on if a HTTP header exists.
-     *
-     * @param string $name
-     * @return bool
      */
-    function hasHeader($name) {
-
+    public function hasHeader(string $name): bool
+    {
         return $this->inner->hasHeader($name);
-
     }
 
     /**
@@ -115,13 +103,11 @@ trait MessageDecoratorTrait {
      * `Set-Cookie` cannot be logically combined with a comma. In those cases
      * you *should* use getHeaderAsArray().
      *
-     * @param string $name
      * @return string|null
      */
-    function getHeader($name) {
-
+    public function getHeader(string $name)
+    {
         return $this->inner->getHeader($name);
-
     }
 
     /**
@@ -131,14 +117,10 @@ trait MessageDecoratorTrait {
      * item will appear in the array.
      *
      * If the header did not exists, this method will return an empty array.
-     *
-     * @param string $name
-     * @return string[]
      */
-    function getHeaderAsArray($name) {
-
+    public function getHeaderAsArray(string $name): array
+    {
         return $this->inner->getHeaderAsArray($name);
-
     }
 
     /**
@@ -148,14 +130,11 @@ trait MessageDecoratorTrait {
      *
      * If the header already existed, it will be overwritten.
      *
-     * @param string $name
      * @param string|string[] $value
-     * @return void
      */
-    function setHeader($name, $value) {
-
+    public function setHeader(string $name, $value)
+    {
         $this->inner->setHeader($name, $value);
-
     }
 
     /**
@@ -165,14 +144,10 @@ trait MessageDecoratorTrait {
      * should be specified as either a string or an array.
      *
      * Any header that already existed will be overwritten.
-     *
-     * @param array $headers
-     * @return void
      */
-    function setHeaders(array $headers) {
-
+    public function setHeaders(array $headers)
+    {
         $this->inner->setHeaders($headers);
-
     }
 
     /**
@@ -182,31 +157,23 @@ trait MessageDecoratorTrait {
      * another value. Individual values can be retrieved with
      * getHeadersAsArray.
      *
-     * @param string $name
-     * @param string $value
-     * @return void
+     * @param string|string[] $value
      */
-    function addHeader($name, $value) {
-
+    public function addHeader(string $name, $value)
+    {
         $this->inner->addHeader($name, $value);
-
     }
 
     /**
      * Adds a new set of HTTP headers.
      *
      * Any existing headers will not be overwritten.
-     *
-     * @param array $headers
-     * @return void
      */
-    function addHeaders(array $headers) {
-
+    public function addHeaders(array $headers)
+    {
         $this->inner->addHeaders($headers);
-
     }
 
-
     /**
      * Removes a HTTP header.
      *
@@ -214,38 +181,28 @@ trait MessageDecoratorTrait {
      * This method should return true if the header was successfully deleted,
      * and false if the header did not exist.
      *
-     * @param string $name
      * @return bool
      */
-    function removeHeader($name) {
-
+    public function removeHeader(string $name): bool
+    {
         return $this->inner->removeHeader($name);
-
     }
 
     /**
      * Sets the HTTP version.
      *
-     * Should be 1.0 or 1.1.
-     *
-     * @param string $version
-     * @return void
+     * Should be 1.0, 1.1 or 2.0.
      */
-    function setHttpVersion($version) {
-
+    public function setHttpVersion(string $version)
+    {
         $this->inner->setHttpVersion($version);
-
     }
 
     /**
      * Returns the HTTP version.
-     *
-     * @return string
      */
-    function getHttpVersion() {
-
+    public function getHttpVersion(): string
+    {
         return $this->inner->getHttpVersion();
-
     }
-
 }
diff --git a/vendor/sabre/http/lib/MessageInterface.php b/vendor/sabre/http/lib/MessageInterface.php
index df55beb2f..8070845d9 100644
--- a/vendor/sabre/http/lib/MessageInterface.php
+++ b/vendor/sabre/http/lib/MessageInterface.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
@@ -10,8 +12,8 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-interface MessageInterface {
-
+interface MessageInterface
+{
     /**
      * Returns the body as a readable stream resource.
      *
@@ -20,7 +22,7 @@ interface MessageInterface {
      *
      * @return resource
      */
-    function getBodyAsStream();
+    public function getBodyAsStream();
 
     /**
      * Returns the body as a string.
@@ -30,41 +32,35 @@ interface MessageInterface {
      *
      * @return string
      */
-    function getBodyAsString();
+    public function getBodyAsString(): string;
 
     /**
      * Returns the message body, as it's internal representation.
      *
-     * This could be either a string or a stream.
+     * This could be either a string, a stream or a callback writing the body to php://output
      *
-     * @return resource|string
+     * @return resource|string|callable
      */
-    function getBody();
+    public function getBody();
 
     /**
      * Updates the body resource with a new stream.
      *
-     * @param resource|string $body
-     * @return void
+     * @param resource|string|callable $body
      */
-    function setBody($body);
+    public function setBody($body);
 
     /**
      * Returns all the HTTP headers as an array.
      *
      * Every header is returned as an array, with one or more values.
-     *
-     * @return array
      */
-    function getHeaders();
+    public function getHeaders(): array;
 
     /**
      * Will return true or false, depending on if a HTTP header exists.
-     *
-     * @param string $name
-     * @return bool
      */
-    function hasHeader($name);
+    public function hasHeader(string $name): bool;
 
     /**
      * Returns a specific HTTP header, based on it's name.
@@ -79,10 +75,9 @@ interface MessageInterface {
      * `Set-Cookie` cannot be logically combined with a comma. In those cases
      * you *should* use getHeaderAsArray().
      *
-     * @param string $name
      * @return string|null
      */
-    function getHeader($name);
+    public function getHeader(string $name);
 
     /**
      * Returns a HTTP header as an array.
@@ -92,10 +87,9 @@ interface MessageInterface {
      *
      * If the header did not exists, this method will return an empty array.
      *
-     * @param string $name
      * @return string[]
      */
-    function getHeaderAsArray($name);
+    public function getHeaderAsArray(string $name): array;
 
     /**
      * Updates a HTTP header.
@@ -104,11 +98,9 @@ interface MessageInterface {
      *
      * If the header already existed, it will be overwritten.
      *
-     * @param string $name
      * @param string|string[] $value
-     * @return void
      */
-    function setHeader($name, $value);
+    public function setHeader(string $name, $value);
 
     /**
      * Sets a new set of HTTP headers.
@@ -117,11 +109,8 @@ interface MessageInterface {
      * should be specified as either a string or an array.
      *
      * Any header that already existed will be overwritten.
-     *
-     * @param array $headers
-     * @return void
      */
-    function setHeaders(array $headers);
+    public function setHeaders(array $headers);
 
     /**
      * Adds a HTTP header.
@@ -130,21 +119,16 @@ interface MessageInterface {
      * another value. Individual values can be retrieved with
      * getHeadersAsArray.
      *
-     * @param string $name
-     * @param string $value
-     * @return void
+     * @param string|string[] $value
      */
-    function addHeader($name, $value);
+    public function addHeader(string $name, $value);
 
     /**
      * Adds a new set of HTTP headers.
      *
      * Any existing headers will not be overwritten.
-     *
-     * @param array $headers
-     * @return void
      */
-    function addHeaders(array $headers);
+    public function addHeaders(array $headers);
 
     /**
      * Removes a HTTP header.
@@ -152,27 +136,18 @@ interface MessageInterface {
      * The specified header name must be treated as case-insenstive.
      * This method should return true if the header was successfully deleted,
      * and false if the header did not exist.
-     *
-     * @param string $name
-     * @return bool
      */
-    function removeHeader($name);
+    public function removeHeader(string $name): bool;
 
     /**
      * Sets the HTTP version.
      *
-     * Should be 1.0 or 1.1.
-     *
-     * @param string $version
-     * @return void
+     * Should be 1.0, 1.1 or 2.0.
      */
-    function setHttpVersion($version);
+    public function setHttpVersion(string $version);
 
     /**
      * Returns the HTTP version.
-     *
-     * @return string
      */
-    function getHttpVersion();
-
+    public function getHttpVersion(): string;
 }
diff --git a/vendor/sabre/http/lib/Request.php b/vendor/sabre/http/lib/Request.php
index dfa3d5b48..496629a5b 100644
--- a/vendor/sabre/http/lib/Request.php
+++ b/vendor/sabre/http/lib/Request.php
@@ -1,8 +1,10 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
-use InvalidArgumentException;
+use LogicException;
 use Sabre\Uri;
 
 /**
@@ -15,132 +17,111 @@ use Sabre\Uri;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Request extends Message implements RequestInterface {
-
+class Request extends Message implements RequestInterface
+{
     /**
-     * HTTP Method
+     * HTTP Method.
      *
      * @var string
      */
     protected $method;
 
     /**
-     * Request Url
+     * Request Url.
      *
      * @var string
      */
     protected $url;
 
     /**
-     * Creates the request object
+     * Creates the request object.
      *
-     * @param string $method
-     * @param string $url
-     * @param array $headers
-     * @param resource $body
+     * @param resource|callable|string $body
      */
-    function __construct($method = null, $url = null, array $headers = null, $body = null) {
-
-        if (is_array($method)) {
-            throw new InvalidArgumentException('The first argument for this constructor should be a string or null, not an array. Did you upgrade from sabre/http 1.0 to 2.0?');
-        }
-        if (!is_null($method))      $this->setMethod($method);
-        if (!is_null($url))         $this->setUrl($url);
-        if (!is_null($headers))     $this->setHeaders($headers);
-        if (!is_null($body))        $this->setBody($body);
-
+    public function __construct(string $method, string $url, array $headers = [], $body = null)
+    {
+        $this->setMethod($method);
+        $this->setUrl($url);
+        $this->setHeaders($headers);
+        $this->setBody($body);
     }
 
     /**
-     * Returns the current HTTP method
-     *
-     * @return string
+     * Returns the current HTTP method.
      */
-    function getMethod() {
-
+    public function getMethod(): string
+    {
         return $this->method;
-
     }
 
     /**
-     * Sets the HTTP method
-     *
-     * @param string $method
-     * @return void
+     * Sets the HTTP method.
      */
-    function setMethod($method) {
-
+    public function setMethod(string $method)
+    {
         $this->method = $method;
-
     }
 
     /**
      * Returns the request url.
-     *
-     * @return string
      */
-    function getUrl() {
-
+    public function getUrl(): string
+    {
         return $this->url;
-
     }
 
     /**
      * Sets the request url.
-     *
-     * @param string $url
-     * @return void
      */
-    function setUrl($url) {
-
+    public function setUrl(string $url)
+    {
         $this->url = $url;
-
     }
 
     /**
      * Returns the list of query parameters.
      *
      * This is equivalent to PHP's $_GET superglobal.
-     *
-     * @return array
      */
-    function getQueryParameters() {
-
+    public function getQueryParameters(): array
+    {
         $url = $this->getUrl();
-        if (($index = strpos($url, '?')) === false) {
+        if (false === ($index = strpos($url, '?'))) {
             return [];
-        } else {
-            parse_str(substr($url, $index + 1), $queryParams);
-            return $queryParams;
         }
 
+        parse_str(substr($url, $index + 1), $queryParams);
+
+        return $queryParams;
     }
 
+    protected $absoluteUrl;
+
     /**
      * Sets the absolute url.
-     *
-     * @param string $url
-     * @return void
      */
-    function setAbsoluteUrl($url) {
-
+    public function setAbsoluteUrl(string $url)
+    {
         $this->absoluteUrl = $url;
-
     }
 
     /**
      * Returns the absolute url.
-     *
-     * @return string
      */
-    function getAbsoluteUrl() {
+    public function getAbsoluteUrl(): string
+    {
+        if (!$this->absoluteUrl) {
+            // Guessing we're a http endpoint.
+            $this->absoluteUrl = 'http://'.
+                ($this->getHeader('Host') ?? 'localhost').
+                $this->getUrl();
+        }
 
         return $this->absoluteUrl;
-
     }
 
     /**
-     * Base url
+     * Base url.
      *
      * @var string
      */
@@ -150,25 +131,18 @@ class Request extends Message implements RequestInterface {
      * Sets a base url.
      *
      * This url is used for relative path calculations.
-     *
-     * @param string $url
-     * @return void
      */
-    function setBaseUrl($url) {
-
+    public function setBaseUrl(string $url)
+    {
         $this->baseUrl = $url;
-
     }
 
     /**
      * Returns the current base url.
-     *
-     * @return string
      */
-    function getBaseUrl() {
-
+    public function getBaseUrl(): string
+    {
         return $this->baseUrl;
-
     }
 
     /**
@@ -185,33 +159,29 @@ class Request extends Message implements RequestInterface {
      * ISO-8859-1, it will convert it to UTF-8.
      *
      * If the path is outside of the base url, a LogicException will be thrown.
-     *
-     * @return string
      */
-    function getPath() {
-
+    public function getPath(): string
+    {
         // Removing duplicated slashes.
         $uri = str_replace('//', '/', $this->getUrl());
 
         $uri = Uri\normalize($uri);
         $baseUri = Uri\normalize($this->getBaseUrl());
 
-        if (strpos($uri, $baseUri) === 0) {
-
+        if (0 === strpos($uri, $baseUri)) {
             // We're not interested in the query part (everything after the ?).
             list($uri) = explode('?', $uri);
-            return trim(URLUtil::decodePath(substr($uri, strlen($baseUri))), '/');
 
+            return trim(decodePath(substr($uri, strlen($baseUri))), '/');
         }
-        // A special case, if the baseUri was accessed without a trailing
-        // slash, we'll accept it as well.
-        elseif ($uri . '/' === $baseUri) {
 
+        if ($uri.'/' === $baseUri) {
             return '';
-
         }
+        // A special case, if the baseUri was accessed without a trailing
+        // slash, we'll accept it as well.
 
-        throw new \LogicException('Requested uri (' . $this->getUrl() . ') is out of base uri (' . $this->getBaseUrl() . ')');
+        throw new \LogicException('Requested uri ('.$this->getUrl().') is out of base uri ('.$this->getBaseUrl().')');
     }
 
     /**
@@ -228,27 +198,20 @@ class Request extends Message implements RequestInterface {
      *
      * This would not have been needed, if POST data was accessible as
      * php://input, but unfortunately we need to special case it.
-     *
-     * @param array $postData
-     * @return void
      */
-    function setPostData(array $postData) {
-
+    public function setPostData(array $postData)
+    {
         $this->postData = $postData;
-
     }
 
     /**
      * Returns the POST data.
      *
      * This is equivalent to PHP's $_POST superglobal.
-     *
-     * @return array
      */
-    function getPostData() {
-
+    public function getPostData(): array
+    {
         return $this->postData;
-
     }
 
     /**
@@ -263,54 +226,42 @@ class Request extends Message implements RequestInterface {
      *
      * If the value does not exist in the array, null is returned.
      *
-     * @param string $valueName
      * @return string|null
      */
-    function getRawServerValue($valueName) {
-
-        if (isset($this->rawServerData[$valueName])) {
-            return $this->rawServerData[$valueName];
-        }
-
+    public function getRawServerValue(string $valueName)
+    {
+        return $this->rawServerData[$valueName] ?? null;
     }
 
     /**
      * Sets the _SERVER array.
-     *
-     * @param array $data
-     * @return void
      */
-    function setRawServerData(array $data) {
-
+    public function setRawServerData(array $data)
+    {
         $this->rawServerData = $data;
-
     }
 
     /**
      * Serializes the request object as a string.
      *
      * This is useful for debugging purposes.
-     *
-     * @return string
      */
-    function __toString() {
-
-        $out = $this->getMethod() . ' ' . $this->getUrl() . ' HTTP/' . $this->getHTTPVersion() . "\r\n";
+    public function __toString(): string
+    {
+        $out = $this->getMethod().' '.$this->getUrl().' HTTP/'.$this->getHttpVersion()."\r\n";
 
         foreach ($this->getHeaders() as $key => $value) {
             foreach ($value as $v) {
-                if ($key === 'Authorization') {
+                if ('Authorization' === $key) {
                     list($v) = explode(' ', $v, 2);
                     $v .= ' REDACTED';
                 }
-                $out .= $key . ": " . $v . "\r\n";
+                $out .= $key.': '.$v."\r\n";
             }
         }
         $out .= "\r\n";
         $out .= $this->getBodyAsString();
 
         return $out;
-
     }
-
 }
diff --git a/vendor/sabre/http/lib/RequestDecorator.php b/vendor/sabre/http/lib/RequestDecorator.php
index 7ee3f6fc8..0ad24925f 100644
--- a/vendor/sabre/http/lib/RequestDecorator.php
+++ b/vendor/sabre/http/lib/RequestDecorator.php
@@ -1,9 +1,11 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
- * Request Decorator
+ * Request Decorator.
  *
  * This helper class allows you to easily create decorators for the Request
  * object.
@@ -12,99 +14,72 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class RequestDecorator implements RequestInterface {
-
+class RequestDecorator implements RequestInterface
+{
     use MessageDecoratorTrait;
 
     /**
      * Constructor.
-     *
-     * @param RequestInterface $inner
      */
-    function __construct(RequestInterface $inner) {
-
+    public function __construct(RequestInterface $inner)
+    {
         $this->inner = $inner;
-
     }
 
     /**
-     * Returns the current HTTP method
-     *
-     * @return string
+     * Returns the current HTTP method.
      */
-    function getMethod() {
-
+    public function getMethod(): string
+    {
         return $this->inner->getMethod();
-
     }
 
     /**
-     * Sets the HTTP method
-     *
-     * @param string $method
-     * @return void
+     * Sets the HTTP method.
      */
-    function setMethod($method) {
-
+    public function setMethod(string $method)
+    {
         $this->inner->setMethod($method);
-
     }
 
     /**
      * Returns the request url.
-     *
-     * @return string
      */
-    function getUrl() {
-
+    public function getUrl(): string
+    {
         return $this->inner->getUrl();
-
     }
 
     /**
      * Sets the request url.
-     *
-     * @param string $url
-     * @return void
      */
-    function setUrl($url) {
-
+    public function setUrl(string $url)
+    {
         $this->inner->setUrl($url);
-
     }
 
     /**
      * Returns the absolute url.
-     *
-     * @return string
      */
-    function getAbsoluteUrl() {
-
+    public function getAbsoluteUrl(): string
+    {
         return $this->inner->getAbsoluteUrl();
-
     }
 
     /**
      * Sets the absolute url.
-     *
-     * @param string $url
-     * @return void
      */
-    function setAbsoluteUrl($url) {
-
+    public function setAbsoluteUrl(string $url)
+    {
         $this->inner->setAbsoluteUrl($url);
-
     }
 
     /**
      * Returns the current base url.
-     *
-     * @return string
      */
-    function getBaseUrl() {
-
+    public function getBaseUrl(): string
+    {
         return $this->inner->getBaseUrl();
-
     }
 
     /**
@@ -113,14 +88,10 @@ class RequestDecorator implements RequestInterface {
      * This url is used for relative path calculations.
      *
      * The base url should default to /
-     *
-     * @param string $url
-     * @return void
      */
-    function setBaseUrl($url) {
-
+    public function setBaseUrl(string $url)
+    {
         $this->inner->setBaseUrl($url);
-
     }
 
     /**
@@ -137,39 +108,30 @@ class RequestDecorator implements RequestInterface {
      * ISO-8859-1, it will convert it to UTF-8.
      *
      * If the path is outside of the base url, a LogicException will be thrown.
-     *
-     * @return string
      */
-    function getPath() {
-
+    public function getPath(): string
+    {
         return $this->inner->getPath();
-
     }
 
     /**
      * Returns the list of query parameters.
      *
      * This is equivalent to PHP's $_GET superglobal.
-     *
-     * @return array
      */
-    function getQueryParameters() {
-
+    public function getQueryParameters(): array
+    {
         return $this->inner->getQueryParameters();
-
     }
 
     /**
      * Returns the POST data.
      *
      * This is equivalent to PHP's $_POST superglobal.
-     *
-     * @return array
      */
-    function getPostData() {
-
+    public function getPostData(): array
+    {
         return $this->inner->getPostData();
-
     }
 
     /**
@@ -179,53 +141,39 @@ class RequestDecorator implements RequestInterface {
      *
      * This would not have been needed, if POST data was accessible as
      * php://input, but unfortunately we need to special case it.
-     *
-     * @param array $postData
-     * @return void
      */
-    function setPostData(array $postData) {
-
+    public function setPostData(array $postData)
+    {
         $this->inner->setPostData($postData);
-
     }
 
-
     /**
      * Returns an item from the _SERVER array.
      *
      * If the value does not exist in the array, null is returned.
      *
-     * @param string $valueName
      * @return string|null
      */
-    function getRawServerValue($valueName) {
-
+    public function getRawServerValue(string $valueName)
+    {
         return $this->inner->getRawServerValue($valueName);
-
     }
 
     /**
      * Sets the _SERVER array.
-     *
-     * @param array $data
-     * @return void
      */
-    function setRawServerData(array $data) {
-
+    public function setRawServerData(array $data)
+    {
         $this->inner->setRawServerData($data);
-
     }
 
     /**
      * Serializes the request object as a string.
      *
      * This is useful for debugging purposes.
-     *
-     * @return string
      */
-    function __toString() {
-
+    public function __toString(): string
+    {
         return $this->inner->__toString();
-
     }
 }
diff --git a/vendor/sabre/http/lib/RequestInterface.php b/vendor/sabre/http/lib/RequestInterface.php
index 63d9cbb51..83fa85bdc 100644
--- a/vendor/sabre/http/lib/RequestInterface.php
+++ b/vendor/sabre/http/lib/RequestInterface.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
@@ -9,59 +11,42 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-interface RequestInterface extends MessageInterface {
-
+interface RequestInterface extends MessageInterface
+{
     /**
-     * Returns the current HTTP method
-     *
-     * @return string
+     * Returns the current HTTP method.
      */
-    function getMethod();
+    public function getMethod(): string;
 
     /**
-     * Sets the HTTP method
-     *
-     * @param string $method
-     * @return void
+     * Sets the HTTP method.
      */
-    function setMethod($method);
+    public function setMethod(string $method);
 
     /**
      * Returns the request url.
-     *
-     * @return string
      */
-    function getUrl();
+    public function getUrl(): string;
 
     /**
      * Sets the request url.
-     *
-     * @param string $url
-     * @return void
      */
-    function setUrl($url);
+    public function setUrl(string $url);
 
     /**
      * Returns the absolute url.
-     *
-     * @return string
      */
-    function getAbsoluteUrl();
+    public function getAbsoluteUrl(): string;
 
     /**
      * Sets the absolute url.
-     *
-     * @param string $url
-     * @return void
      */
-    function setAbsoluteUrl($url);
+    public function setAbsoluteUrl(string $url);
 
     /**
      * Returns the current base url.
-     *
-     * @return string
      */
-    function getBaseUrl();
+    public function getBaseUrl(): string;
 
     /**
      * Sets a base url.
@@ -69,11 +54,8 @@ interface RequestInterface extends MessageInterface {
      * This url is used for relative path calculations.
      *
      * The base url should default to /
-     *
-     * @param string $url
-     * @return void
      */
-    function setBaseUrl($url);
+    public function setBaseUrl(string $url);
 
     /**
      * Returns the relative path.
@@ -89,28 +71,22 @@ interface RequestInterface extends MessageInterface {
      * ISO-8859-1, it will convert it to UTF-8.
      *
      * If the path is outside of the base url, a LogicException will be thrown.
-     *
-     * @return string
      */
-    function getPath();
+    public function getPath(): string;
 
     /**
      * Returns the list of query parameters.
      *
      * This is equivalent to PHP's $_GET superglobal.
-     *
-     * @return array
      */
-    function getQueryParameters();
+    public function getQueryParameters(): array;
 
     /**
      * Returns the POST data.
      *
      * This is equivalent to PHP's $_POST superglobal.
-     *
-     * @return array
      */
-    function getPostData();
+    public function getPostData(): array;
 
     /**
      * Sets the post data.
@@ -119,29 +95,20 @@ interface RequestInterface extends MessageInterface {
      *
      * This would not have been needed, if POST data was accessible as
      * php://input, but unfortunately we need to special case it.
-     *
-     * @param array $postData
-     * @return void
      */
-    function setPostData(array $postData);
+    public function setPostData(array $postData);
 
     /**
      * Returns an item from the _SERVER array.
      *
      * If the value does not exist in the array, null is returned.
      *
-     * @param string $valueName
      * @return string|null
      */
-    function getRawServerValue($valueName);
+    public function getRawServerValue(string $valueName);
 
     /**
      * Sets the _SERVER array.
-     *
-     * @param array $data
-     * @return void
      */
-    function setRawServerData(array $data);
-
-
+    public function setRawServerData(array $data);
 }
diff --git a/vendor/sabre/http/lib/Response.php b/vendor/sabre/http/lib/Response.php
index 01920d8d9..64dfbc0b2 100644
--- a/vendor/sabre/http/lib/Response.php
+++ b/vendor/sabre/http/lib/Response.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
@@ -9,14 +11,14 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Response extends Message implements ResponseInterface {
-
+class Response extends Message implements ResponseInterface
+{
     /**
      * This is the list of currently registered HTTP status codes.
      *
      * @var array
      */
-    static $statusCodes = [
+    public static $statusCodes = [
         100 => 'Continue',
         101 => 'Switching Protocols',
         102 => 'Processing',
@@ -81,57 +83,55 @@ class Response extends Message implements ResponseInterface {
     ];
 
     /**
-     * HTTP status code
+     * HTTP status code.
      *
      * @var int
      */
     protected $status;
 
     /**
-     * HTTP status text
+     * HTTP status text.
      *
      * @var string
      */
     protected $statusText;
 
     /**
-     * Creates the response object
+     * Creates the response object.
      *
      * @param string|int $status
-     * @param array $headers
-     * @param resource $body
+     * @param array      $headers
+     * @param resource   $body
      */
-    function __construct($status = null, array $headers = null, $body = null) {
-
-        if (!is_null($status)) $this->setStatus($status);
-        if (!is_null($headers)) $this->setHeaders($headers);
-        if (!is_null($body)) $this->setBody($body);
-
+    public function __construct($status = 500, array $headers = null, $body = null)
+    {
+        if (null !== $status) {
+            $this->setStatus($status);
+        }
+        if (null !== $headers) {
+            $this->setHeaders($headers);
+        }
+        if (null !== $body) {
+            $this->setBody($body);
+        }
     }
 
-
     /**
      * Returns the current HTTP status code.
-     *
-     * @return int
      */
-    function getStatus() {
-
+    public function getStatus(): int
+    {
         return $this->status;
-
     }
 
     /**
      * Returns the human-readable status string.
      *
      * In the case of a 200, this may for example be 'OK'.
-     *
-     * @return string
      */
-    function getStatusText() {
-
+    public function getStatusText(): string
+    {
         return $this->statusText;
-
     }
 
     /**
@@ -144,21 +144,20 @@ class Response extends Message implements ResponseInterface {
      * added.
      *
      * @param string|int $status
+     *
      * @throws \InvalidArgumentException
-     * @return void
      */
-    function setStatus($status) {
-
+    public function setStatus($status)
+    {
         if (ctype_digit($status) || is_int($status)) {
-
             $statusCode = $status;
-            $statusText = isset(self::$statusCodes[$status]) ? self::$statusCodes[$status] : 'Unknown';
-
+            $statusText = self::$statusCodes[$status] ?? 'Unknown';
         } else {
             list(
                 $statusCode,
                 $statusText
             ) = explode(' ', $status, 2);
+            $statusCode = (int) $statusCode;
         }
         if ($statusCode < 100 || $statusCode > 999) {
             throw new \InvalidArgumentException('The HTTP status code must be exactly 3 digits');
@@ -166,28 +165,24 @@ class Response extends Message implements ResponseInterface {
 
         $this->status = $statusCode;
         $this->statusText = $statusText;
-
     }
 
     /**
      * Serializes the response object as a string.
      *
      * This is useful for debugging purposes.
-     *
-     * @return string
      */
-    function __toString() {
-
-        $str = 'HTTP/' . $this->httpVersion . ' ' . $this->getStatus() . ' ' . $this->getStatusText() . "\r\n";
+    public function __toString(): string
+    {
+        $str = 'HTTP/'.$this->httpVersion.' '.$this->getStatus().' '.$this->getStatusText()."\r\n";
         foreach ($this->getHeaders() as $key => $value) {
             foreach ($value as $v) {
-                $str .= $key . ": " . $v . "\r\n";
+                $str .= $key.': '.$v."\r\n";
             }
         }
         $str .= "\r\n";
         $str .= $this->getBodyAsString();
-        return $str;
 
+        return $str;
     }
-
 }
diff --git a/vendor/sabre/http/lib/ResponseDecorator.php b/vendor/sabre/http/lib/ResponseDecorator.php
index db3a67507..289dba5cc 100644
--- a/vendor/sabre/http/lib/ResponseDecorator.php
+++ b/vendor/sabre/http/lib/ResponseDecorator.php
@@ -1,9 +1,11 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
- * Response Decorator
+ * Response Decorator.
  *
  * This helper class allows you to easily create decorators for the Response
  * object.
@@ -12,45 +14,36 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class ResponseDecorator implements ResponseInterface {
-
+class ResponseDecorator implements ResponseInterface
+{
     use MessageDecoratorTrait;
 
     /**
      * Constructor.
-     *
-     * @param ResponseInterface $inner
      */
-    function __construct(ResponseInterface $inner) {
-
+    public function __construct(ResponseInterface $inner)
+    {
         $this->inner = $inner;
-
     }
 
     /**
      * Returns the current HTTP status code.
-     *
-     * @return int
      */
-    function getStatus() {
-
+    public function getStatus(): int
+    {
         return $this->inner->getStatus();
-
     }
 
-
     /**
      * Returns the human-readable status string.
      *
      * In the case of a 200, this may for example be 'OK'.
-     *
-     * @return string
      */
-    function getStatusText() {
-
+    public function getStatusText(): string
+    {
         return $this->inner->getStatusText();
-
     }
+
     /**
      * Sets the HTTP status code.
      *
@@ -61,12 +54,10 @@ class ResponseDecorator implements ResponseInterface {
      * added.
      *
      * @param string|int $status
-     * @return void
      */
-    function setStatus($status) {
-
+    public function setStatus($status)
+    {
         $this->inner->setStatus($status);
-
     }
 
     /**
@@ -76,9 +67,8 @@ class ResponseDecorator implements ResponseInterface {
      *
      * @return string
      */
-    function __toString() {
-
+    public function __toString(): string
+    {
         return $this->inner->__toString();
-
     }
 }
diff --git a/vendor/sabre/http/lib/ResponseInterface.php b/vendor/sabre/http/lib/ResponseInterface.php
index 411cdc06c..9bd93f179 100644
--- a/vendor/sabre/http/lib/ResponseInterface.php
+++ b/vendor/sabre/http/lib/ResponseInterface.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
@@ -9,23 +11,19 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-interface ResponseInterface extends MessageInterface {
-
+interface ResponseInterface extends MessageInterface
+{
     /**
      * Returns the current HTTP status code.
-     *
-     * @return int
      */
-    function getStatus();
+    public function getStatus(): int;
 
     /**
      * Returns the human-readable status string.
      *
      * In the case of a 200, this may for example be 'OK'.
-     *
-     * @return string
      */
-    function getStatusText();
+    public function getStatusText(): string;
 
     /**
      * Sets the HTTP status code.
@@ -37,9 +35,8 @@ interface ResponseInterface extends MessageInterface {
      * added.
      *
      * @param string|int $status
+     *
      * @throws \InvalidArgumentException
-     * @return void
      */
-    function setStatus($status);
-
+    public function setStatus($status);
 }
diff --git a/vendor/sabre/http/lib/Sapi.php b/vendor/sabre/http/lib/Sapi.php
index 054380e73..80254f3f3 100644
--- a/vendor/sabre/http/lib/Sapi.php
+++ b/vendor/sabre/http/lib/Sapi.php
@@ -1,9 +1,13 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
+use InvalidArgumentException;
+
 /**
- * PHP SAPI
+ * PHP SAPI.
  *
  * This object is responsible for:
  * 1. Constructing a Request object based on the current HTTP request sent to
@@ -28,56 +32,85 @@ namespace Sabre\HTTP;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Sapi {
-
+class Sapi
+{
     /**
      * This static method will create a new Request object, based on the
      * current PHP request.
-     *
-     * @return Request
      */
-    static function getRequest() {
+    public static function getRequest(): Request
+    {
+        $serverArr = $_SERVER;
+
+        if ('cli' === PHP_SAPI) {
+            // If we're running off the CLI, we're going to set some default
+            // settings.
+            $serverArr['REQUEST_URI'] = $_SERVER['REQUEST_URI'] ?? '/';
+            $serverArr['REQUEST_METHOD'] = $_SERVER['REQUEST_METHOD'] ?? 'CLI';
+        }
 
-        $r = self::createFromServerArray($_SERVER);
+        $r = self::createFromServerArray($serverArr);
         $r->setBody(fopen('php://input', 'r'));
         $r->setPostData($_POST);
-        return $r;
 
+        return $r;
     }
 
     /**
      * Sends the HTTP response back to a HTTP client.
      *
      * This calls php's header() function and streams the body to php://output.
-     *
-     * @param ResponseInterface $response
-     * @return void
      */
-    static function sendResponse(ResponseInterface $response) {
-
-        header('HTTP/' . $response->getHttpVersion() . ' ' . $response->getStatus() . ' ' . $response->getStatusText());
+    public static function sendResponse(ResponseInterface $response)
+    {
+        header('HTTP/'.$response->getHttpVersion().' '.$response->getStatus().' '.$response->getStatusText());
         foreach ($response->getHeaders() as $key => $value) {
-
             foreach ($value as $k => $v) {
-                if ($k === 0) {
-                    header($key . ': ' . $v);
+                if (0 === $k) {
+                    header($key.': '.$v);
                 } else {
-                    header($key . ': ' . $v, false);
+                    header($key.': '.$v, false);
                 }
             }
-
         }
 
         $body = $response->getBody();
-        if (is_null($body)) return;
+        if (null === $body) {
+            return;
+        }
+
+        if (is_callable($body)) {
+            $body();
+
+            return;
+        }
 
         $contentLength = $response->getHeader('Content-Length');
-        if ($contentLength !== null) {
+        if (null !== $contentLength) {
             $output = fopen('php://output', 'wb');
-            if (is_resource($body) && get_resource_type($body) == 'stream') {
-                if (PHP_INT_SIZE !== 4){
+            if (is_resource($body) && 'stream' == get_resource_type($body)) {
+                if (PHP_INT_SIZE > 4) {
                     // use the dedicated function on 64 Bit systems
-                    stream_copy_to_stream($body, $output, $contentLength);
+                    // a workaround to make PHP more possible to use mmap based copy, see https://github.com/sabre-io/http/pull/119
+                    $left = (int) $contentLength;
+                    // copy with 4MiB chunks
+                    $chunk_size = 4 * 1024 * 1024;
+                    stream_set_chunk_size($output, $chunk_size);
+                    // If this is a partial response, flush the beginning bytes until the first position that is a multiple of the page size.
+                    $contentRange = $response->getHeader('Content-Range');
+                    // Matching "Content-Range: bytes 1234-5678/7890"
+                    if (null !== $contentRange && preg_match('/^bytes\s([0-9]*)-([0-9]*)\//i', $contentRange, $matches) && '' !== $matches[1]) {
+                        // 4kB should be the default page size on most architectures
+                        $pageSize = 4096;
+                        $offset = (int) $matches[1];
+                        $delta = ($offset % $pageSize) > 0 ? ($pageSize - $offset % $pageSize) : 0;
+                        if ($delta > 0) {
+                            $left -= stream_copy_to_stream($body, $output, min($delta, $left));
+                        }
+                    }
+                    while ($left > 0) {
+                        $left -= stream_copy_to_stream($body, $output, min($left, $chunk_size));
+                    }
                 } else {
                     // workaround for 32 Bit systems to avoid stream_copy_to_stream
                     while (!feof($body)) {
@@ -85,7 +118,7 @@ class Sapi {
                     }
                 }
             } else {
-                fwrite($output, $body, $contentLength);
+                fwrite($output, $body, (int) $contentLength);
             }
         } else {
             file_put_contents('php://output', $body);
@@ -94,18 +127,16 @@ class Sapi {
         if (is_resource($body)) {
             fclose($body);
         }
-
     }
 
     /**
      * This static method will create a new Request object, based on a PHP
      * $_SERVER array.
      *
-     * @param array $serverArray
-     * @return Request
+     * REQUEST_URI and REQUEST_METHOD are required.
      */
-    static function createFromServerArray(array $serverArray) {
-
+    public static function createFromServerArray(array $serverArray): Request
+    {
         $headers = [];
         $method = null;
         $url = null;
@@ -115,61 +146,61 @@ class Sapi {
         $hostName = 'localhost';
 
         foreach ($serverArray as $key => $value) {
-
             switch ($key) {
-
-                case 'SERVER_PROTOCOL' :
-                    if ($value === 'HTTP/1.0') {
+                case 'SERVER_PROTOCOL':
+                    if ('HTTP/1.0' === $value) {
                         $httpVersion = '1.0';
+                    } elseif ('HTTP/2.0' === $value) {
+                        $httpVersion = '2.0';
                     }
                     break;
-                case 'REQUEST_METHOD' :
+                case 'REQUEST_METHOD':
                     $method = $value;
                     break;
-                case 'REQUEST_URI' :
+                case 'REQUEST_URI':
                     $url = $value;
                     break;
 
                 // These sometimes show up without a HTTP_ prefix
-                case 'CONTENT_TYPE' :
+                case 'CONTENT_TYPE':
                     $headers['Content-Type'] = $value;
                     break;
-                case 'CONTENT_LENGTH' :
+                case 'CONTENT_LENGTH':
                     $headers['Content-Length'] = $value;
                     break;
 
                 // mod_php on apache will put credentials in these variables.
                 // (fast)cgi does not usually do this, however.
-                case 'PHP_AUTH_USER' :
+                case 'PHP_AUTH_USER':
                     if (isset($serverArray['PHP_AUTH_PW'])) {
-                        $headers['Authorization'] = 'Basic ' . base64_encode($value . ':' . $serverArray['PHP_AUTH_PW']);
+                        $headers['Authorization'] = 'Basic '.base64_encode($value.':'.$serverArray['PHP_AUTH_PW']);
                     }
                     break;
 
                 // Similarly, mod_php may also screw around with digest auth.
-                case 'PHP_AUTH_DIGEST' :
-                    $headers['Authorization'] = 'Digest ' . $value;
+                case 'PHP_AUTH_DIGEST':
+                    $headers['Authorization'] = 'Digest '.$value;
                     break;
 
                 // Apache may prefix the HTTP_AUTHORIZATION header with
                 // REDIRECT_, if mod_rewrite was used.
-                case 'REDIRECT_HTTP_AUTHORIZATION' :
+                case 'REDIRECT_HTTP_AUTHORIZATION':
                     $headers['Authorization'] = $value;
                     break;
 
-                case 'HTTP_HOST' :
+                case 'HTTP_HOST':
                     $hostName = $value;
                     $headers['Host'] = $value;
                     break;
 
-                case 'HTTPS' :
-                    if (!empty($value) && $value !== 'off') {
+                case 'HTTPS':
+                    if (!empty($value) && 'off' !== $value) {
                         $protocol = 'https';
                     }
                     break;
 
-                default :
-                    if (substr($key, 0, 5) === 'HTTP_') {
+                default:
+                    if ('HTTP_' === substr($key, 0, 5)) {
                         // It's a HTTP header
 
                         // Normalizing it to be prettier
@@ -182,21 +213,23 @@ class Sapi {
                         // Turning spaces into dashes.
                         $header = str_replace(' ', '-', $header);
                         $headers[$header] = $value;
-
                     }
                     break;
-
-
             }
+        }
 
+        if (null === $url) {
+            throw new InvalidArgumentException('The _SERVER array must have a REQUEST_URI key');
         }
 
+        if (null === $method) {
+            throw new InvalidArgumentException('The _SERVER array must have a REQUEST_METHOD key');
+        }
         $r = new Request($method, $url, $headers);
         $r->setHttpVersion($httpVersion);
         $r->setRawServerData($serverArray);
-        $r->setAbsoluteUrl($protocol . '://' . $hostName . $url);
-        return $r;
+        $r->setAbsoluteUrl($protocol.'://'.$hostName.$url);
 
+        return $r;
     }
-
 }
diff --git a/vendor/sabre/http/lib/URLUtil.php b/vendor/sabre/http/lib/URLUtil.php
deleted file mode 100644
index 85c0e1150..000000000
--- a/vendor/sabre/http/lib/URLUtil.php
+++ /dev/null
@@ -1,103 +0,0 @@
-<?php
-
-namespace Sabre\HTTP;
-
-use Sabre\URI;
-
-/**
- * URL utility class
- *
- * Note: this class is deprecated. All its functionality moved to functions.php
- * or sabre\uri.
- *
- * @deprecated
- * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-class URLUtil {
-
-    /**
-     * Encodes the path of a url.
-     *
-     * slashes (/) are treated as path-separators.
-     *
-     * @deprecated use \Sabre\HTTP\encodePath()
-     * @param string $path
-     * @return string
-     */
-    static function encodePath($path) {
-
-        return encodePath($path);
-
-    }
-
-    /**
-     * Encodes a 1 segment of a path
-     *
-     * Slashes are considered part of the name, and are encoded as %2f
-     *
-     * @deprecated use \Sabre\HTTP\encodePathSegment()
-     * @param string $pathSegment
-     * @return string
-     */
-    static function encodePathSegment($pathSegment) {
-
-        return encodePathSegment($pathSegment);
-
-    }
-
-    /**
-     * Decodes a url-encoded path
-     *
-     * @deprecated use \Sabre\HTTP\decodePath
-     * @param string $path
-     * @return string
-     */
-    static function decodePath($path) {
-
-        return decodePath($path);
-
-    }
-
-    /**
-     * Decodes a url-encoded path segment
-     *
-     * @deprecated use \Sabre\HTTP\decodePathSegment()
-     * @param string $path
-     * @return string
-     */
-    static function decodePathSegment($path) {
-
-        return decodePathSegment($path);
-
-    }
-
-    /**
-     * Returns the 'dirname' and 'basename' for a path.
-     *
-     * @deprecated Use Sabre\Uri\split().
-     * @param string $path
-     * @return array
-     */
-    static function splitPath($path) {
-
-        return Uri\split($path);
-
-    }
-
-    /**
-     * Resolves relative urls, like a browser would.
-     *
-     * @deprecated Use Sabre\Uri\resolve().
-     * @param string $basePath
-     * @param string $newPath
-     * @return string
-     */
-    static function resolve($basePath, $newPath) {
-
-        return Uri\resolve($basePath, $newPath);
-
-    }
-
-}
diff --git a/vendor/sabre/http/lib/Util.php b/vendor/sabre/http/lib/Util.php
deleted file mode 100644
index e3f13a645..000000000
--- a/vendor/sabre/http/lib/Util.php
+++ /dev/null
@@ -1,74 +0,0 @@
-<?php
-
-namespace Sabre\HTTP;
-
-/**
- * HTTP utility methods
- *
- * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
- * @author Evert Pot (http://evertpot.com/)
- * @author Paul Voegler
- * @deprecated All these functions moved to functions.php
- * @license http://sabre.io/license/ Modified BSD License
- */
-class Util {
-
-    /**
-     * Content negotiation
-     *
-     * @deprecated Use \Sabre\HTTP\negotiateContentType
-     * @param string|null $acceptHeaderValue
-     * @param array $availableOptions
-     * @return string|null
-     */
-    static function negotiateContentType($acceptHeaderValue, array $availableOptions) {
-
-        return negotiateContentType($acceptHeaderValue, $availableOptions);
-
-    }
-
-    /**
-     * Deprecated! Use negotiateContentType.
-     *
-     * @deprecated Use \Sabre\HTTP\NegotiateContentType
-     * @param string|null $acceptHeaderValue
-     * @param array $availableOptions
-     * @return string|null
-     */
-    static function negotiate($acceptHeaderValue, array $availableOptions) {
-
-        return negotiateContentType($acceptHeaderValue, $availableOptions);
-
-    }
-
-    /**
-     * Parses a RFC2616-compatible date string
-     *
-     * This method returns false if the date is invalid
-     *
-     * @deprecated Use parseDate
-     * @param string $dateHeader
-     * @return bool|DateTime
-     */
-    static function parseHTTPDate($dateHeader) {
-
-        return parseDate($dateHeader);
-
-    }
-
-    /**
-     * Transforms a DateTime object to HTTP's most common date format.
-     *
-     * We're serializing it as the RFC 1123 date, which, for HTTP must be
-     * specified as GMT.
-     *
-     * @deprecated Use toDate
-     * @param \DateTime $dateTime
-     * @return string
-     */
-    static function toHTTPDate(\DateTime $dateTime) {
-
-        return toDate($dateTime);
-
-    }
-}
diff --git a/vendor/sabre/http/lib/Version.php b/vendor/sabre/http/lib/Version.php
index c40532ae8..20a401773 100644
--- a/vendor/sabre/http/lib/Version.php
+++ b/vendor/sabre/http/lib/Version.php
@@ -1,19 +1,20 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 /**
- * This class contains the version number for the HTTP package
+ * This class contains the version number for the HTTP package.
  *
  * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Version {
-
+class Version
+{
     /**
-     * Full version number
+     * Full version number.
      */
-    const VERSION = '4.2.4';
-
+    const VERSION = '5.0.4';
 }
diff --git a/vendor/sabre/http/lib/functions.php b/vendor/sabre/http/lib/functions.php
index d94119623..197a9e661 100644
--- a/vendor/sabre/http/lib/functions.php
+++ b/vendor/sabre/http/lib/functions.php
@@ -1,8 +1,11 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\HTTP;
 
 use DateTime;
+use InvalidArgumentException;
 
 /**
  * A collection of useful helpers for parsing or generating various HTTP
@@ -27,61 +30,64 @@ use DateTime;
  *   http://tools.ietf.org/html/rfc7231#section-7.1.1.1
  *
  * @param string $dateString
+ *
  * @return bool|DateTime
  */
-function parseDate($dateString) {
-
+function parseDate(string $dateString)
+{
     // Only the format is checked, valid ranges are checked by strtotime below
     $month = '(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)';
     $weekday = '(Monday|Tuesday|Wednesday|Thursday|Friday|Saturday|Sunday)';
     $wkday = '(Mon|Tue|Wed|Thu|Fri|Sat|Sun)';
     $time = '([0-1]\d|2[0-3])(\:[0-5]\d){2}';
-    $date3 = $month . ' ([12]\d|3[01]| [1-9])';
-    $date2 = '(0[1-9]|[12]\d|3[01])\-' . $month . '\-\d{2}';
+    $date3 = $month.' ([12]\d|3[01]| [1-9])';
+    $date2 = '(0[1-9]|[12]\d|3[01])\-'.$month.'\-\d{2}';
     // 4-digit year cannot begin with 0 - unix timestamp begins in 1970
-    $date1 = '(0[1-9]|[12]\d|3[01]) ' . $month . ' [1-9]\d{3}';
+    $date1 = '(0[1-9]|[12]\d|3[01]) '.$month.' [1-9]\d{3}';
 
     // ANSI C's asctime() format
     // 4-digit year cannot begin with 0 - unix timestamp begins in 1970
-    $asctime_date = $wkday . ' ' . $date3 . ' ' . $time . ' [1-9]\d{3}';
+    $asctime_date = $wkday.' '.$date3.' '.$time.' [1-9]\d{3}';
     // RFC 850, obsoleted by RFC 1036
-    $rfc850_date = $weekday . ', ' . $date2 . ' ' . $time . ' GMT';
+    $rfc850_date = $weekday.', '.$date2.' '.$time.' GMT';
     // RFC 822, updated by RFC 1123
-    $rfc1123_date = $wkday . ', ' . $date1 . ' ' . $time . ' GMT';
+    $rfc1123_date = $wkday.', '.$date1.' '.$time.' GMT';
     // allowed date formats by RFC 2616
     $HTTP_date = "($rfc1123_date|$rfc850_date|$asctime_date)";
 
     // allow for space around the string and strip it
     $dateString = trim($dateString, ' ');
-    if (!preg_match('/^' . $HTTP_date . '$/', $dateString))
+    if (!preg_match('/^'.$HTTP_date.'$/', $dateString)) {
         return false;
+    }
 
     // append implicit GMT timezone to ANSI C time format
-    if (strpos($dateString, ' GMT') === false)
+    if (false === strpos($dateString, ' GMT')) {
         $dateString .= ' GMT';
+    }
 
     try {
         return new DateTime($dateString, new \DateTimeZone('UTC'));
     } catch (\Exception $e) {
         return false;
     }
-
 }
 
 /**
- * Transforms a DateTime object to a valid HTTP/1.1 Date header value
+ * Transforms a DateTime object to a valid HTTP/1.1 Date header value.
  *
  * @param DateTime $dateTime
+ *
  * @return string
  */
-function toDate(DateTime $dateTime) {
-
+function toDate(DateTime $dateTime): string
+{
     // We need to clone it, as we don't want to affect the existing
     // DateTime.
     $dateTime = clone $dateTime;
     $dateTime->setTimezone(new \DateTimeZone('GMT'));
-    return $dateTime->format('D, d M Y H:i:s \G\M\T');
 
+    return $dateTime->format('D, d M Y H:i:s \G\M\T');
 }
 
 /**
@@ -101,11 +107,12 @@ function toDate(DateTime $dateTime) {
  * implying that no accept header was sent.
  *
  * @param string|null $acceptHeaderValue
- * @param array $availableOptions
+ * @param array       $availableOptions
+ *
  * @return string|null
  */
-function negotiateContentType($acceptHeaderValue, array $availableOptions) {
-
+function negotiateContentType($acceptHeaderValue, array $availableOptions)
+{
     if (!$acceptHeaderValue) {
         // Grabbing the first in the list.
         return reset($availableOptions);
@@ -130,9 +137,10 @@ function negotiateContentType($acceptHeaderValue, array $availableOptions) {
     $lastChoice = null;
 
     foreach ($proposals as $proposal) {
-
         // Ignoring broken values.
-        if (is_null($proposal)) continue;
+        if (null === $proposal) {
+            continue;
+        }
 
         // If the quality is lower we don't have to bother comparing.
         if ($proposal['quality'] < $lastQuality) {
@@ -140,12 +148,11 @@ function negotiateContentType($acceptHeaderValue, array $availableOptions) {
         }
 
         foreach ($options as $optionIndex => $option) {
-
-            if ($proposal['type'] !== '*' && $proposal['type'] !== $option['type']) {
+            if ('*' !== $proposal['type'] && $proposal['type'] !== $option['type']) {
                 // no match on type.
                 continue;
             }
-            if ($proposal['subType'] !== '*' && $proposal['subType'] !== $option['subType']) {
+            if ('*' !== $proposal['subType'] && $proposal['subType'] !== $option['subType']) {
                 // no match on subtype.
                 continue;
             }
@@ -165,31 +172,25 @@ function negotiateContentType($acceptHeaderValue, array $availableOptions) {
             // subtype. We need to calculate a score for how specific the
             // match was.
             $specificity =
-                ($proposal['type'] !== '*' ? 20 : 0) +
-                ($proposal['subType'] !== '*' ? 10 : 0) +
+                ('*' !== $proposal['type'] ? 20 : 0) +
+                ('*' !== $proposal['subType'] ? 10 : 0) +
                 count($option['parameters']);
 
-
             // Does this entry win?
             if (
                 ($proposal['quality'] > $lastQuality) ||
                 ($proposal['quality'] === $lastQuality && $specificity > $lastSpecificity) ||
                 ($proposal['quality'] === $lastQuality && $specificity === $lastSpecificity && $optionIndex < $lastOptionIndex)
             ) {
-
                 $lastQuality = $proposal['quality'];
                 $lastSpecificity = $specificity;
                 $lastOptionIndex = $optionIndex;
                 $lastChoice = $availableOptions[$optionIndex];
-
             }
-
         }
-
     }
 
     return $lastChoice;
-
 }
 
 /**
@@ -217,10 +218,11 @@ function negotiateContentType($acceptHeaderValue, array $availableOptions) {
  * uses them.
  *
  * @param string|string[] $input
+ *
  * @return array
  */
-function parsePrefer($input) {
-
+function parsePrefer($input): array
+{
     $token = '[!#$%&\'*+\-.^_`~A-Za-z0-9]+';
 
     // Work in progress
@@ -241,7 +243,6 @@ REGEX;
 
     $output = [];
     foreach (getHeaderValues($input) as $value) {
-
         if (!preg_match($regex, $value, $matches)) {
             // Ignore
             continue;
@@ -249,22 +250,22 @@ REGEX;
 
         // Mapping old values to their new counterparts
         switch ($matches['name']) {
-            case 'return-asynch' :
+            case 'return-asynch':
                 $output['respond-async'] = true;
                 break;
-            case 'return-representation' :
+            case 'return-representation':
                 $output['return'] = 'representation';
                 break;
-            case 'return-minimal' :
+            case 'return-minimal':
                 $output['return'] = 'minimal';
                 break;
-            case 'strict' :
+            case 'strict':
                 $output['handling'] = 'strict';
                 break;
-            case 'lenient' :
+            case 'lenient':
                 $output['handling'] = 'lenient';
                 break;
-            default :
+            default:
                 if (isset($matches['value'])) {
                     $value = trim($matches['value'], '"');
                 } else {
@@ -273,11 +274,9 @@ REGEX;
                 $output[strtolower($matches['name'])] = empty($value) ? true : $value;
                 break;
         }
-
     }
 
     return $output;
-
 }
 
 /**
@@ -296,25 +295,26 @@ REGEX;
  *
  * @param string|string[] $values
  * @param string|string[] $values2
- * @return string[]
  */
-function getHeaderValues($values, $values2 = null) {
-
-    $values = (array)$values;
+function getHeaderValues($values, $values2 = null): array
+{
+    $values = (array) $values;
     if ($values2) {
-        $values = array_merge($values, (array)$values2);
+        $values = array_merge($values, (array) $values2);
     }
+
+    $result = array();
     foreach ($values as $l1) {
         foreach (explode(',', $l1) as $l2) {
             $result[] = trim($l2);
         }
     }
-    return $result;
 
+    return $result;
 }
 
 /**
- * Parses a mime-type and splits it into:
+ * Parses a mime-type and splits it into:.
  *
  * 1. type
  * 2. subtype
@@ -322,10 +322,11 @@ function getHeaderValues($values, $values2 = null) {
  * 4. parameters
  *
  * @param string $str
+ *
  * @return array
  */
-function parseMimeType($str) {
-
+function parseMimeType(string $str): array
+{
     $parameters = [];
     // If no q= parameter appears, then quality = 1.
     $quality = 1;
@@ -333,17 +334,22 @@ function parseMimeType($str) {
     $parts = explode(';', $str);
 
     // The first part is the mime-type.
-    $mimeType = array_shift($parts);
+    $mimeType = trim(array_shift($parts));
+
+    if ('*' === $mimeType) {
+        $mimeType = '*/*';
+    }
 
-    $mimeType = explode('/', trim($mimeType));
-    if (count($mimeType) !== 2) {
+    $mimeType = explode('/', $mimeType);
+    if (2 !== count($mimeType)) {
         // Illegal value
-        return null;
+        var_dump($mimeType);
+        die();
+        throw new InvalidArgumentException('Not a valid mime-type: '.$str);
     }
     list($type, $subType) = $mimeType;
 
     foreach ($parts as $part) {
-
         $part = trim($part);
         if (strpos($part, '=')) {
             list($partName, $partValue) =
@@ -357,89 +363,66 @@ function parseMimeType($str) {
         // the parameter list. Anything after the q= counts as an
         // 'accept extension' and could introduce new semantics in
         // content-negotation.
-        if ($partName !== 'q') {
+        if ('q' !== $partName) {
             $parameters[$partName] = $part;
         } else {
-            $quality = (float)$partValue;
+            $quality = (float) $partValue;
             break; // Stop parsing parts
         }
-
     }
 
     return [
-        'type'       => $type,
-        'subType'    => $subType,
-        'quality'    => $quality,
+        'type' => $type,
+        'subType' => $subType,
+        'quality' => $quality,
         'parameters' => $parameters,
     ];
-
 }
 
 /**
  * Encodes the path of a url.
  *
  * slashes (/) are treated as path-separators.
- *
- * @param string $path
- * @return string
  */
-function encodePath($path) {
-
-    return preg_replace_callback('/([^A-Za-z0-9_\-\.~\(\)\/:@])/', function($match) {
-
-        return '%' . sprintf('%02x', ord($match[0]));
-
+function encodePath(string $path): string
+{
+    return preg_replace_callback('/([^A-Za-z0-9_\-\.~\(\)\/:@])/', function ($match) {
+        return '%'.sprintf('%02x', ord($match[0]));
     }, $path);
-
 }
 
 /**
- * Encodes a 1 segment of a path
+ * Encodes a 1 segment of a path.
  *
  * Slashes are considered part of the name, and are encoded as %2f
- *
- * @param string $pathSegment
- * @return string
  */
-function encodePathSegment($pathSegment) {
-
-    return preg_replace_callback('/([^A-Za-z0-9_\-\.~\(\):@])/', function($match) {
-
-        return '%' . sprintf('%02x', ord($match[0]));
-
+function encodePathSegment(string $pathSegment): string
+{
+    return preg_replace_callback('/([^A-Za-z0-9_\-\.~\(\):@])/', function ($match) {
+        return '%'.sprintf('%02x', ord($match[0]));
     }, $pathSegment);
 }
 
 /**
- * Decodes a url-encoded path
- *
- * @param string $path
- * @return string
+ * Decodes a url-encoded path.
  */
-function decodePath($path) {
-
+function decodePath(string $path): string
+{
     return decodePathSegment($path);
-
 }
 
 /**
- * Decodes a url-encoded path segment
- *
- * @param string $path
- * @return string
+ * Decodes a url-encoded path segment.
  */
-function decodePathSegment($path) {
-
+function decodePathSegment(string $path): string
+{
     $path = rawurldecode($path);
     $encoding = mb_detect_encoding($path, ['UTF-8', 'ISO-8859-1']);
 
     switch ($encoding) {
-
-        case 'ISO-8859-1' :
+        case 'ISO-8859-1':
             $path = utf8_encode($path);
-
     }
 
     return $path;
-
 }
diff --git a/vendor/sabre/http/phpstan.neon b/vendor/sabre/http/phpstan.neon
new file mode 100644
index 000000000..241663a72
--- /dev/null
+++ b/vendor/sabre/http/phpstan.neon
@@ -0,0 +1,3 @@
+parameters:
+  level: 1
+  bootstrap: %currentWorkingDirectory%/vendor/autoload.php