Merge pull request #686 from dawnbreak/markdown

Upgrade PHP Markdown library.

17 files changed, 4358 insertions, 20 deletions

diff --git a/vendor/autoload.php b/vendor/autoload.php
index 063a1b7e1..8b4926c3d 100644
--- a/vendor/autoload.php
+++ b/vendor/autoload.php
@@ -2,6 +2,6 @@
 
 // autoload.php @generated by Composer
 
-require_once __DIR__ . '/composer' . '/autoload_real.php';
+require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInit7b34d7e50a62201ec5d5e526a5b8b35d::getLoader();
diff --git a/vendor/composer/ClassLoader.php b/vendor/composer/ClassLoader.php
index ac67d302a..4626994fd 100644
--- a/vendor/composer/ClassLoader.php
+++ b/vendor/composer/ClassLoader.php
@@ -55,6 +55,7 @@ class ClassLoader
     private $classMap = array();
     private $classMapAuthoritative = false;
     private $missingClasses = array();
+    private $apcuPrefix;
 
     public function getPrefixes()
     {
@@ -272,6 +273,26 @@ class ClassLoader
     }
 
     /**
+     * APCu prefix to use to cache found/not-found classes, if the extension is enabled.
+     *
+     * @param string|null $apcuPrefix
+     */
+    public function setApcuPrefix($apcuPrefix)
+    {
+        $this->apcuPrefix = function_exists('apcu_fetch') && ini_get('apc.enabled') ? $apcuPrefix : null;
+    }
+
+    /**
+     * The APCu prefix in use, or null if APCu caching is not enabled.
+     *
+     * @return string|null
+     */
+    public function getApcuPrefix()
+    {
+        return $this->apcuPrefix;
+    }
+
+    /**
      * Registers this instance as an autoloader.
      *
      * @param bool $prepend Whether to prepend the autoloader or not
@@ -313,11 +334,6 @@ class ClassLoader
      */
     public function findFile($class)
     {
-        // work around for PHP 5.3.0 - 5.3.2 https://bugs.php.net/50731
-        if ('\\' == $class[0]) {
-            $class = substr($class, 1);
-        }
-
         // class map lookup
         if (isset($this->classMap[$class])) {
             return $this->classMap[$class];
@@ -325,6 +341,12 @@ class ClassLoader
         if ($this->classMapAuthoritative || isset($this->missingClasses[$class])) {
             return false;
         }
+        if (null !== $this->apcuPrefix) {
+            $file = apcu_fetch($this->apcuPrefix.$class, $hit);
+            if ($hit) {
+                return $file;
+            }
+        }
 
         $file = $this->findFileWithExtension($class, '.php');
 
@@ -333,6 +355,10 @@ class ClassLoader
             $file = $this->findFileWithExtension($class, '.hh');
         }
 
+        if (null !== $this->apcuPrefix) {
+            apcu_add($this->apcuPrefix.$class, $file);
+        }
+
         if (false === $file) {
             // Remember that this class does not exist.
             $this->missingClasses[$class] = true;
diff --git a/vendor/composer/autoload_classmap.php b/vendor/composer/autoload_classmap.php
index 54b09f68b..8b8d3dd58 100644
--- a/vendor/composer/autoload_classmap.php
+++ b/vendor/composer/autoload_classmap.php
@@ -7,6 +7,9 @@ $baseDir = dirname($vendorDir);
 
 return array(
     'Hubzilla\\Import\\Import' => $baseDir . '/include/Import/Importer.php',
+    'Michelf\\Markdown' => $vendorDir . '/michelf/php-markdown/Michelf/Markdown.php',
+    'Michelf\\MarkdownExtra' => $vendorDir . '/michelf/php-markdown/Michelf/MarkdownExtra.php',
+    'Michelf\\MarkdownInterface' => $vendorDir . '/michelf/php-markdown/Michelf/MarkdownInterface.php',
     'Psr\\Log\\AbstractLogger' => $vendorDir . '/psr/log/Psr/Log/AbstractLogger.php',
     'Psr\\Log\\InvalidArgumentException' => $vendorDir . '/psr/log/Psr/Log/InvalidArgumentException.php',
     'Psr\\Log\\LogLevel' => $vendorDir . '/psr/log/Psr/Log/LogLevel.php',
@@ -265,6 +268,7 @@ return array(
     'Sabre\\HTTP\\URLUtil' => $vendorDir . '/sabre/http/lib/URLUtil.php',
     'Sabre\\HTTP\\Util' => $vendorDir . '/sabre/http/lib/Util.php',
     'Sabre\\HTTP\\Version' => $vendorDir . '/sabre/http/lib/Version.php',
+    'Sabre\\Uri\\InvalidUriException' => $vendorDir . '/sabre/uri/lib/InvalidUriException.php',
     'Sabre\\Uri\\Version' => $vendorDir . '/sabre/uri/lib/Version.php',
     'Sabre\\VObject\\BirthdayCalendarGenerator' => $vendorDir . '/sabre/vobject/lib/BirthdayCalendarGenerator.php',
     'Sabre\\VObject\\Cli' => $vendorDir . '/sabre/vobject/lib/Cli.php',
@@ -357,6 +361,7 @@ return array(
     'Zotlabs\\Access\\PermissionLimits' => $baseDir . '/Zotlabs/Access/PermissionLimits.php',
     'Zotlabs\\Access\\PermissionRoles' => $baseDir . '/Zotlabs/Access/PermissionRoles.php',
     'Zotlabs\\Access\\Permissions' => $baseDir . '/Zotlabs/Access/Permissions.php',
+    'Zotlabs\\Daemon\\Addon' => $baseDir . '/Zotlabs/Daemon/Addon.php',
     'Zotlabs\\Daemon\\Checksites' => $baseDir . '/Zotlabs/Daemon/Checksites.php',
     'Zotlabs\\Daemon\\Cli_suggest' => $baseDir . '/Zotlabs/Daemon/Cli_suggest.php',
     'Zotlabs\\Daemon\\Cron' => $baseDir . '/Zotlabs/Daemon/Cron.php',
@@ -391,7 +396,10 @@ return array(
     'Zotlabs\\Lib\\Enotify' => $baseDir . '/Zotlabs/Lib/Enotify.php',
     'Zotlabs\\Lib\\ExtendedZip' => $baseDir . '/Zotlabs/Lib/ExtendedZip.php',
     'Zotlabs\\Lib\\IConfig' => $baseDir . '/Zotlabs/Lib/IConfig.php',
+    'Zotlabs\\Lib\\NativeWiki' => $baseDir . '/Zotlabs/Lib/NativeWiki.php',
+    'Zotlabs\\Lib\\NativeWikiPage' => $baseDir . '/Zotlabs/Lib/NativeWikiPage.php',
     'Zotlabs\\Lib\\PConfig' => $baseDir . '/Zotlabs/Lib/PConfig.php',
+    'Zotlabs\\Lib\\Permcat' => $baseDir . '/Zotlabs/Lib/Permcat.php',
     'Zotlabs\\Lib\\PermissionDescription' => $baseDir . '/Zotlabs/Lib/PermissionDescription.php',
     'Zotlabs\\Lib\\ProtoDriver' => $baseDir . '/Zotlabs/Lib/ProtoDriver.php',
     'Zotlabs\\Lib\\SuperCurl' => $baseDir . '/Zotlabs/Lib/SuperCurl.php',
@@ -478,7 +486,6 @@ return array(
     'Zotlabs\\Module\\Magic' => $baseDir . '/Zotlabs/Module/Magic.php',
     'Zotlabs\\Module\\Mail' => $baseDir . '/Zotlabs/Module/Mail.php',
     'Zotlabs\\Module\\Manage' => $baseDir . '/Zotlabs/Module/Manage.php',
-    'Zotlabs\\Module\\Match' => $baseDir . '/Zotlabs/Module/Match.php',
     'Zotlabs\\Module\\Menu' => $baseDir . '/Zotlabs/Module/Menu.php',
     'Zotlabs\\Module\\Message' => $baseDir . '/Zotlabs/Module/Message.php',
     'Zotlabs\\Module\\Mitem' => $baseDir . '/Zotlabs/Module/Mitem.php',
@@ -496,6 +503,7 @@ return array(
     'Zotlabs\\Module\\Page' => $baseDir . '/Zotlabs/Module/Page.php',
     'Zotlabs\\Module\\Pconfig' => $baseDir . '/Zotlabs/Module/Pconfig.php',
     'Zotlabs\\Module\\Pdledit' => $baseDir . '/Zotlabs/Module/Pdledit.php',
+    'Zotlabs\\Module\\Permcat' => $baseDir . '/Zotlabs/Module/Permcat.php',
     'Zotlabs\\Module\\Photo' => $baseDir . '/Zotlabs/Module/Photo.php',
     'Zotlabs\\Module\\Photos' => $baseDir . '/Zotlabs/Module/Photos.php',
     'Zotlabs\\Module\\Ping' => $baseDir . '/Zotlabs/Module/Ping.php',
@@ -525,7 +533,6 @@ return array(
     'Zotlabs\\Module\\Removeme' => $baseDir . '/Zotlabs/Module/Removeme.php',
     'Zotlabs\\Module\\Rmagic' => $baseDir . '/Zotlabs/Module/Rmagic.php',
     'Zotlabs\\Module\\Rpost' => $baseDir . '/Zotlabs/Module/Rpost.php',
-    'Zotlabs\\Module\\Rsd_xml' => $baseDir . '/Zotlabs/Module/Rsd_xml.php',
     'Zotlabs\\Module\\Search' => $baseDir . '/Zotlabs/Module/Search.php',
     'Zotlabs\\Module\\Search_ac' => $baseDir . '/Zotlabs/Module/Search_ac.php',
     'Zotlabs\\Module\\Service_limits' => $baseDir . '/Zotlabs/Module/Service_limits.php',
@@ -536,6 +543,7 @@ return array(
     'Zotlabs\\Module\\Settings\\Featured' => $baseDir . '/Zotlabs/Module/Settings/Featured.php',
     'Zotlabs\\Module\\Settings\\Features' => $baseDir . '/Zotlabs/Module/Settings/Features.php',
     'Zotlabs\\Module\\Settings\\Oauth' => $baseDir . '/Zotlabs/Module/Settings/Oauth.php',
+    'Zotlabs\\Module\\Settings\\Permcats' => $baseDir . '/Zotlabs/Module/Settings/Permcats.php',
     'Zotlabs\\Module\\Settings\\Tokens' => $baseDir . '/Zotlabs/Module/Settings/Tokens.php',
     'Zotlabs\\Module\\Setup' => $baseDir . '/Zotlabs/Module/Setup.php',
     'Zotlabs\\Module\\Share' => $baseDir . '/Zotlabs/Module/Share.php',
@@ -596,6 +604,7 @@ return array(
     'Zotlabs\\Text\\Tagadelic' => $baseDir . '/Zotlabs/Text/Tagadelic.php',
     'Zotlabs\\Web\\CheckJS' => $baseDir . '/Zotlabs/Web/CheckJS.php',
     'Zotlabs\\Web\\Controller' => $baseDir . '/Zotlabs/Web/Controller.php',
+    'Zotlabs\\Web\\HTTPHeaders' => $baseDir . '/Zotlabs/Web/HTTPHeaders.php',
     'Zotlabs\\Web\\HttpMeta' => $baseDir . '/Zotlabs/Web/HttpMeta.php',
     'Zotlabs\\Web\\Router' => $baseDir . '/Zotlabs/Web/Router.php',
     'Zotlabs\\Web\\Session' => $baseDir . '/Zotlabs/Web/Session.php',
diff --git a/vendor/composer/autoload_namespaces.php b/vendor/composer/autoload_namespaces.php
index b7fc0125d..01914946c 100644
--- a/vendor/composer/autoload_namespaces.php
+++ b/vendor/composer/autoload_namespaces.php
@@ -6,4 +6,5 @@ $vendorDir = dirname(dirname(__FILE__));
 $baseDir = dirname($vendorDir);
 
 return array(
+    'Michelf' => array($vendorDir . '/michelf/php-markdown'),
 );
diff --git a/vendor/composer/autoload_real.php b/vendor/composer/autoload_real.php
index 24b45085d..bcae78e29 100644
--- a/vendor/composer/autoload_real.php
+++ b/vendor/composer/autoload_real.php
@@ -23,7 +23,7 @@ class ComposerAutoloaderInit7b34d7e50a62201ec5d5e526a5b8b35d
         self::$loader = $loader = new \Composer\Autoload\ClassLoader();
         spl_autoload_unregister(array('ComposerAutoloaderInit7b34d7e50a62201ec5d5e526a5b8b35d', 'loadClassLoader'));
 
-        $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION');
+        $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
         if ($useStaticLoader) {
             require_once __DIR__ . '/autoload_static.php';
 
diff --git a/vendor/composer/autoload_static.php b/vendor/composer/autoload_static.php
index 7f2551665..070595527 100644
--- a/vendor/composer/autoload_static.php
+++ b/vendor/composer/autoload_static.php
@@ -94,8 +94,21 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         ),
     );
 
+    public static $prefixesPsr0 = array (
+        'M' => 
+        array (
+            'Michelf' => 
+            array (
+                0 => __DIR__ . '/..' . '/michelf/php-markdown',
+            ),
+        ),
+    );
+
     public static $classMap = array (
         'Hubzilla\\Import\\Import' => __DIR__ . '/../..' . '/include/Import/Importer.php',
+        'Michelf\\Markdown' => __DIR__ . '/..' . '/michelf/php-markdown/Michelf/Markdown.php',
+        'Michelf\\MarkdownExtra' => __DIR__ . '/..' . '/michelf/php-markdown/Michelf/MarkdownExtra.php',
+        'Michelf\\MarkdownInterface' => __DIR__ . '/..' . '/michelf/php-markdown/Michelf/MarkdownInterface.php',
         'Psr\\Log\\AbstractLogger' => __DIR__ . '/..' . '/psr/log/Psr/Log/AbstractLogger.php',
         'Psr\\Log\\InvalidArgumentException' => __DIR__ . '/..' . '/psr/log/Psr/Log/InvalidArgumentException.php',
         'Psr\\Log\\LogLevel' => __DIR__ . '/..' . '/psr/log/Psr/Log/LogLevel.php',
@@ -354,6 +367,7 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Sabre\\HTTP\\URLUtil' => __DIR__ . '/..' . '/sabre/http/lib/URLUtil.php',
         'Sabre\\HTTP\\Util' => __DIR__ . '/..' . '/sabre/http/lib/Util.php',
         'Sabre\\HTTP\\Version' => __DIR__ . '/..' . '/sabre/http/lib/Version.php',
+        'Sabre\\Uri\\InvalidUriException' => __DIR__ . '/..' . '/sabre/uri/lib/InvalidUriException.php',
         'Sabre\\Uri\\Version' => __DIR__ . '/..' . '/sabre/uri/lib/Version.php',
         'Sabre\\VObject\\BirthdayCalendarGenerator' => __DIR__ . '/..' . '/sabre/vobject/lib/BirthdayCalendarGenerator.php',
         'Sabre\\VObject\\Cli' => __DIR__ . '/..' . '/sabre/vobject/lib/Cli.php',
@@ -446,6 +460,7 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Zotlabs\\Access\\PermissionLimits' => __DIR__ . '/../..' . '/Zotlabs/Access/PermissionLimits.php',
         'Zotlabs\\Access\\PermissionRoles' => __DIR__ . '/../..' . '/Zotlabs/Access/PermissionRoles.php',
         'Zotlabs\\Access\\Permissions' => __DIR__ . '/../..' . '/Zotlabs/Access/Permissions.php',
+        'Zotlabs\\Daemon\\Addon' => __DIR__ . '/../..' . '/Zotlabs/Daemon/Addon.php',
         'Zotlabs\\Daemon\\Checksites' => __DIR__ . '/../..' . '/Zotlabs/Daemon/Checksites.php',
         'Zotlabs\\Daemon\\Cli_suggest' => __DIR__ . '/../..' . '/Zotlabs/Daemon/Cli_suggest.php',
         'Zotlabs\\Daemon\\Cron' => __DIR__ . '/../..' . '/Zotlabs/Daemon/Cron.php',
@@ -480,7 +495,10 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Zotlabs\\Lib\\Enotify' => __DIR__ . '/../..' . '/Zotlabs/Lib/Enotify.php',
         'Zotlabs\\Lib\\ExtendedZip' => __DIR__ . '/../..' . '/Zotlabs/Lib/ExtendedZip.php',
         'Zotlabs\\Lib\\IConfig' => __DIR__ . '/../..' . '/Zotlabs/Lib/IConfig.php',
+        'Zotlabs\\Lib\\NativeWiki' => __DIR__ . '/../..' . '/Zotlabs/Lib/NativeWiki.php',
+        'Zotlabs\\Lib\\NativeWikiPage' => __DIR__ . '/../..' . '/Zotlabs/Lib/NativeWikiPage.php',
         'Zotlabs\\Lib\\PConfig' => __DIR__ . '/../..' . '/Zotlabs/Lib/PConfig.php',
+        'Zotlabs\\Lib\\Permcat' => __DIR__ . '/../..' . '/Zotlabs/Lib/Permcat.php',
         'Zotlabs\\Lib\\PermissionDescription' => __DIR__ . '/../..' . '/Zotlabs/Lib/PermissionDescription.php',
         'Zotlabs\\Lib\\ProtoDriver' => __DIR__ . '/../..' . '/Zotlabs/Lib/ProtoDriver.php',
         'Zotlabs\\Lib\\SuperCurl' => __DIR__ . '/../..' . '/Zotlabs/Lib/SuperCurl.php',
@@ -539,7 +557,6 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Zotlabs\\Module\\Events' => __DIR__ . '/../..' . '/Zotlabs/Module/Events.php',
         'Zotlabs\\Module\\Fbrowser' => __DIR__ . '/../..' . '/Zotlabs/Module/Fbrowser.php',
         'Zotlabs\\Module\\Feed' => __DIR__ . '/../..' . '/Zotlabs/Module/Feed.php',
-        'Zotlabs\\Module\\Ffsapi' => __DIR__ . '/../..' . '/Zotlabs/Module/Ffsapi.php',
         'Zotlabs\\Module\\Fhublocs' => __DIR__ . '/../..' . '/Zotlabs/Module/Fhublocs.php',
         'Zotlabs\\Module\\File_upload' => __DIR__ . '/../..' . '/Zotlabs/Module/File_upload.php',
         'Zotlabs\\Module\\Filer' => __DIR__ . '/../..' . '/Zotlabs/Module/Filer.php',
@@ -568,7 +585,6 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Zotlabs\\Module\\Magic' => __DIR__ . '/../..' . '/Zotlabs/Module/Magic.php',
         'Zotlabs\\Module\\Mail' => __DIR__ . '/../..' . '/Zotlabs/Module/Mail.php',
         'Zotlabs\\Module\\Manage' => __DIR__ . '/../..' . '/Zotlabs/Module/Manage.php',
-        'Zotlabs\\Module\\Match' => __DIR__ . '/../..' . '/Zotlabs/Module/Match.php',
         'Zotlabs\\Module\\Menu' => __DIR__ . '/../..' . '/Zotlabs/Module/Menu.php',
         'Zotlabs\\Module\\Message' => __DIR__ . '/../..' . '/Zotlabs/Module/Message.php',
         'Zotlabs\\Module\\Mitem' => __DIR__ . '/../..' . '/Zotlabs/Module/Mitem.php',
@@ -583,10 +599,10 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Zotlabs\\Module\\Oep' => __DIR__ . '/../..' . '/Zotlabs/Module/Oep.php',
         'Zotlabs\\Module\\Oexchange' => __DIR__ . '/../..' . '/Zotlabs/Module/Oexchange.php',
         'Zotlabs\\Module\\Online' => __DIR__ . '/../..' . '/Zotlabs/Module/Online.php',
-        'Zotlabs\\Module\\Opensearch' => __DIR__ . '/../..' . '/Zotlabs/Module/Opensearch.php',
         'Zotlabs\\Module\\Page' => __DIR__ . '/../..' . '/Zotlabs/Module/Page.php',
         'Zotlabs\\Module\\Pconfig' => __DIR__ . '/../..' . '/Zotlabs/Module/Pconfig.php',
         'Zotlabs\\Module\\Pdledit' => __DIR__ . '/../..' . '/Zotlabs/Module/Pdledit.php',
+        'Zotlabs\\Module\\Permcat' => __DIR__ . '/../..' . '/Zotlabs/Module/Permcat.php',
         'Zotlabs\\Module\\Photo' => __DIR__ . '/../..' . '/Zotlabs/Module/Photo.php',
         'Zotlabs\\Module\\Photos' => __DIR__ . '/../..' . '/Zotlabs/Module/Photos.php',
         'Zotlabs\\Module\\Ping' => __DIR__ . '/../..' . '/Zotlabs/Module/Ping.php',
@@ -616,7 +632,6 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Zotlabs\\Module\\Removeme' => __DIR__ . '/../..' . '/Zotlabs/Module/Removeme.php',
         'Zotlabs\\Module\\Rmagic' => __DIR__ . '/../..' . '/Zotlabs/Module/Rmagic.php',
         'Zotlabs\\Module\\Rpost' => __DIR__ . '/../..' . '/Zotlabs/Module/Rpost.php',
-        'Zotlabs\\Module\\Rsd_xml' => __DIR__ . '/../..' . '/Zotlabs/Module/Rsd_xml.php',
         'Zotlabs\\Module\\Search' => __DIR__ . '/../..' . '/Zotlabs/Module/Search.php',
         'Zotlabs\\Module\\Search_ac' => __DIR__ . '/../..' . '/Zotlabs/Module/Search_ac.php',
         'Zotlabs\\Module\\Service_limits' => __DIR__ . '/../..' . '/Zotlabs/Module/Service_limits.php',
@@ -627,6 +642,7 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Zotlabs\\Module\\Settings\\Featured' => __DIR__ . '/../..' . '/Zotlabs/Module/Settings/Featured.php',
         'Zotlabs\\Module\\Settings\\Features' => __DIR__ . '/../..' . '/Zotlabs/Module/Settings/Features.php',
         'Zotlabs\\Module\\Settings\\Oauth' => __DIR__ . '/../..' . '/Zotlabs/Module/Settings/Oauth.php',
+        'Zotlabs\\Module\\Settings\\Permcats' => __DIR__ . '/../..' . '/Zotlabs/Module/Settings/Permcats.php',
         'Zotlabs\\Module\\Settings\\Tokens' => __DIR__ . '/../..' . '/Zotlabs/Module/Settings/Tokens.php',
         'Zotlabs\\Module\\Setup' => __DIR__ . '/../..' . '/Zotlabs/Module/Setup.php',
         'Zotlabs\\Module\\Share' => __DIR__ . '/../..' . '/Zotlabs/Module/Share.php',
@@ -687,6 +703,7 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Zotlabs\\Text\\Tagadelic' => __DIR__ . '/../..' . '/Zotlabs/Text/Tagadelic.php',
         'Zotlabs\\Web\\CheckJS' => __DIR__ . '/../..' . '/Zotlabs/Web/CheckJS.php',
         'Zotlabs\\Web\\Controller' => __DIR__ . '/../..' . '/Zotlabs/Web/Controller.php',
+        'Zotlabs\\Web\\HTTPHeaders' => __DIR__ . '/../..' . '/Zotlabs/Web/HTTPHeaders.php',
         'Zotlabs\\Web\\HttpMeta' => __DIR__ . '/../..' . '/Zotlabs/Web/HttpMeta.php',
         'Zotlabs\\Web\\Router' => __DIR__ . '/../..' . '/Zotlabs/Web/Router.php',
         'Zotlabs\\Web\\Session' => __DIR__ . '/../..' . '/Zotlabs/Web/Session.php',
@@ -707,6 +724,7 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         return \Closure::bind(function () use ($loader) {
             $loader->prefixLengthsPsr4 = ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d::$prefixLengthsPsr4;
             $loader->prefixDirsPsr4 = ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d::$prefixDirsPsr4;
+            $loader->prefixesPsr0 = ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d::$prefixesPsr0;
             $loader->classMap = ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d::$classMap;
 
         }, null, ClassLoader::class);
diff --git a/vendor/composer/installed.json b/vendor/composer/installed.json
index 88acfc40c..73827081f 100644
--- a/vendor/composer/installed.json
+++ b/vendor/composer/installed.json
@@ -21,7 +21,7 @@
             "phpunit/phpunit": "*",
             "sabre/cs": "~0.0.1"
         },
-        "time": "2016-03-08 02:29:27",
+        "time": "2016-03-08T02:29:27+00:00",
         "type": "library",
         "installation-source": "dist",
         "autoload": {
@@ -79,7 +79,7 @@
         "suggest": {
             "hoa/bench": "If you would like to run the benchmark scripts"
         },
-        "time": "2016-07-15 19:52:17",
+        "time": "2016-07-15T19:52:17+00:00",
         "bin": [
             "bin/vobject",
             "bin/generate_vcards"
@@ -173,7 +173,7 @@
             "phpunit/phpunit": "*",
             "sabre/cs": "~0.0.4"
         },
-        "time": "2015-11-05 20:14:39",
+        "time": "2015-11-05T20:14:39+00:00",
         "type": "library",
         "installation-source": "dist",
         "autoload": {
@@ -238,7 +238,7 @@
         "suggest": {
             "ext-curl": " to make http requests with the Client class"
         },
-        "time": "2016-01-06 23:00:08",
+        "time": "2016-01-06T23:00:08+00:00",
         "type": "library",
         "installation-source": "dist",
         "autoload": {
@@ -310,7 +310,7 @@
             "ext-curl": "*",
             "ext-pdo": "*"
         },
-        "time": "2016-06-28 02:44:05",
+        "time": "2016-06-28T02:44:05+00:00",
         "bin": [
             "bin/sabredav",
             "bin/naturalselection"
@@ -379,7 +379,7 @@
             "phpunit/phpunit": "*",
             "sabre/cs": "~1.0.0"
         },
-        "time": "2016-10-09 22:57:52",
+        "time": "2016-10-09T22:57:52+00:00",
         "type": "library",
         "installation-source": "dist",
         "autoload": {
@@ -435,7 +435,7 @@
         "require": {
             "php": ">=5.3.0"
         },
-        "time": "2016-10-10 12:19:37",
+        "time": "2016-10-10T12:19:37+00:00",
         "type": "library",
         "extra": {
             "branch-alias": {
@@ -465,5 +465,58 @@
             "psr",
             "psr-3"
         ]
+    },
+    {
+        "name": "michelf/php-markdown",
+        "version": "1.7.0",
+        "version_normalized": "1.7.0.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/michelf/php-markdown.git",
+            "reference": "1f51cc520948f66cd2af8cbc45a5ee175e774220"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/michelf/php-markdown/zipball/1f51cc520948f66cd2af8cbc45a5ee175e774220",
+            "reference": "1f51cc520948f66cd2af8cbc45a5ee175e774220",
+            "shasum": ""
+        },
+        "require": {
+            "php": ">=5.3.0"
+        },
+        "time": "2016-10-29T18:58:20+00:00",
+        "type": "library",
+        "extra": {
+            "branch-alias": {
+                "dev-lib": "1.4.x-dev"
+            }
+        },
+        "installation-source": "dist",
+        "autoload": {
+            "psr-0": {
+                "Michelf": ""
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "BSD-3-Clause"
+        ],
+        "authors": [
+            {
+                "name": "Michel Fortin",
+                "email": "michel.fortin@michelf.ca",
+                "homepage": "https://michelf.ca/",
+                "role": "Developer"
+            },
+            {
+                "name": "John Gruber",
+                "homepage": "https://daringfireball.net/"
+            }
+        ],
+        "description": "PHP Markdown",
+        "homepage": "https://michelf.ca/projects/php-markdown/",
+        "keywords": [
+            "markdown"
+        ]
     }
 ]
diff --git a/vendor/michelf/php-markdown/License.md b/vendor/michelf/php-markdown/License.md
new file mode 100644
index 000000000..c16197b69
--- /dev/null
+++ b/vendor/michelf/php-markdown/License.md
@@ -0,0 +1,36 @@
+PHP Markdown Lib  
+Copyright (c) 2004-2016 Michel Fortin  
+<https://michelf.ca/>  
+All rights reserved.
+
+Based on Markdown  
+Copyright (c) 2003-2006 John Gruber   
+<https://daringfireball.net/>   
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+
+* Neither the name "Markdown" nor the names of its contributors may
+  be used to endorse or promote products derived from this software
+  without specific prior written permission.
+
+This software is provided by the copyright holders and contributors "as
+is" and any express or implied warranties, including, but not limited
+to, the implied warranties of merchantability and fitness for a
+particular purpose are disclaimed. In no event shall the copyright owner
+or contributors be liable for any direct, indirect, incidental, special,
+exemplary, or consequential damages (including, but not limited to,
+procurement of substitute goods or services; loss of use, data, or
+profits; or business interruption) however caused and on any theory of
+liability, whether in contract, strict liability, or tort (including
+negligence or otherwise) arising in any way out of the use of this
+software, even if advised of the possibility of such damage.
diff --git a/vendor/michelf/php-markdown/Michelf/Markdown.inc.php b/vendor/michelf/php-markdown/Michelf/Markdown.inc.php
new file mode 100644
index 000000000..e2bd3808e
--- /dev/null
+++ b/vendor/michelf/php-markdown/Michelf/Markdown.inc.php
@@ -0,0 +1,10 @@
+<?php
+
+// Use this file if you cannot use class autoloading. It will include all the
+// files needed for the Markdown parser.
+//
+// Take a look at the PSR-0-compatible class autoloading implementation
+// in the Readme.php file if you want a simple autoloader setup.
+
+require_once dirname(__FILE__) . '/MarkdownInterface.php';
+require_once dirname(__FILE__) . '/Markdown.php';
diff --git a/vendor/michelf/php-markdown/Michelf/Markdown.php b/vendor/michelf/php-markdown/Michelf/Markdown.php
new file mode 100644
index 000000000..c3eaf4464
--- /dev/null
+++ b/vendor/michelf/php-markdown/Michelf/Markdown.php
@@ -0,0 +1,1896 @@
+<?php
+/**
+ * Markdown  -  A text-to-HTML conversion tool for web writers
+ *
+ * @package   php-markdown
+ * @author    Michel Fortin <michel.fortin@michelf.com>
+ * @copyright 2004-2016 Michel Fortin <https://michelf.com/projects/php-markdown/>
+ * @copyright (Original Markdown) 2004-2006 John Gruber <https://daringfireball.net/projects/markdown/>
+ */
+
+namespace Michelf;
+
+/**
+ * Markdown Parser Class
+ */
+class Markdown implements MarkdownInterface {
+	/**
+	 * Define the package version
+	 * @var string
+	 */
+	const MARKDOWNLIB_VERSION = "1.7.0";
+
+	/**
+	 * Simple function interface - Initialize the parser and return the result
+	 * of its transform method. This will work fine for derived classes too.
+	 *
+	 * @api
+	 *
+	 * @param  string $text
+	 * @return string
+	 */
+	public static function defaultTransform($text) {
+		// Take parser class on which this function was called.
+		$parser_class = \get_called_class();
+
+		// Try to take parser from the static parser list
+		static $parser_list;
+		$parser =& $parser_list[$parser_class];
+
+		// Create the parser it not already set
+		if (!$parser) {
+			$parser = new $parser_class;
+		}
+
+		// Transform text using parser.
+		return $parser->transform($text);
+	}
+
+	/**
+	 * Configuration variables
+	 */
+
+	/**
+	 * Change to ">" for HTML output.
+	 * @var string
+	 */
+	public $empty_element_suffix = " />";
+
+	/**
+	 * The width of indentation of the output markup
+	 * @var int
+	 */
+	public $tab_width = 4;
+	
+	/**
+	 * Change to `true` to disallow markup or entities.
+	 * @var boolean
+	 */
+	public $no_markup   = false;
+	public $no_entities = false;
+	
+
+	/**
+	 * Change to `true` to enable line breaks on \n without two trailling spaces
+	 * @var boolean
+	 */
+	public $hard_wrap = false;
+
+	/**
+	 * Predefined URLs and titles for reference links and images.
+	 * @var array
+	 */
+	public $predef_urls   = array();
+	public $predef_titles = array();
+
+	/**
+	 * Optional filter function for URLs
+	 * @var callable
+	 */
+	public $url_filter_func = null;
+
+	/**
+	 * Optional header id="" generation callback function.
+	 * @var callable
+	 */
+	public $header_id_func = null;
+	
+	/**
+	 * Optional function for converting code block content to HTML
+	 * @var callable
+	 */
+	public $code_block_content_func = null;
+
+	/**
+	 * Optional function for converting code span content to HTML.
+	 * @var callable
+	 */
+	public $code_span_content_func = null;
+
+	/**
+	 * Class attribute to toggle "enhanced ordered list" behaviour
+	 * setting this to true will allow ordered lists to start from the index
+	 * number that is defined first.
+	 * 
+	 * For example:
+	 * 2. List item two
+	 * 3. List item three
+	 *
+	 * Becomes:
+	 * <ol start="2">
+	 * <li>List item two</li>
+	 * <li>List item three</li>
+	 * </ol>
+	 *
+	 * @var bool
+	 */
+	public $enhanced_ordered_list = false;
+
+	/**
+	 * Parser implementation
+	 */
+
+	/**
+	 * Regex to match balanced [brackets].
+	 * Needed to insert a maximum bracked depth while converting to PHP.
+	 * @var int
+	 */
+	protected $nested_brackets_depth = 6;
+	protected $nested_brackets_re;
+
+	protected $nested_url_parenthesis_depth = 4;
+	protected $nested_url_parenthesis_re;
+
+	/**
+	 * Table of hash values for escaped characters:
+	 * @var string
+	 */
+	protected $escape_chars = '\`*_{}[]()>#+-.!';
+	protected $escape_chars_re;
+
+	/**
+	 * Constructor function. Initialize appropriate member variables.
+	 * @return void
+	 */
+	public function __construct() {
+		$this->_initDetab();
+		$this->prepareItalicsAndBold();
+	
+		$this->nested_brackets_re = 
+			str_repeat('(?>[^\[\]]+|\[', $this->nested_brackets_depth).
+			str_repeat('\])*', $this->nested_brackets_depth);
+	
+		$this->nested_url_parenthesis_re = 
+			str_repeat('(?>[^()\s]+|\(', $this->nested_url_parenthesis_depth).
+			str_repeat('(?>\)))*', $this->nested_url_parenthesis_depth);
+		
+		$this->escape_chars_re = '['.preg_quote($this->escape_chars).']';
+		
+		// Sort document, block, and span gamut in ascendent priority order.
+		asort($this->document_gamut);
+		asort($this->block_gamut);
+		asort($this->span_gamut);
+	}
+
+
+	/**
+	 * Internal hashes used during transformation.
+	 * @var array
+	 */
+	protected $urls        = array();
+	protected $titles      = array();
+	protected $html_hashes = array();
+	
+	/**
+	 * Status flag to avoid invalid nesting.
+	 * @var boolean
+	 */
+	protected $in_anchor = false;
+	
+	/**
+	 * Called before the transformation process starts to setup parser states.
+	 * @return void
+	 */
+	protected function setup() {
+		// Clear global hashes.
+		$this->urls        = $this->predef_urls;
+		$this->titles      = $this->predef_titles;
+		$this->html_hashes = array();
+		$this->in_anchor   = false;
+	}
+	
+	/**
+	 * Called after the transformation process to clear any variable which may
+	 * be taking up memory unnecessarly.
+	 * @return void
+	 */
+	protected function teardown() {
+		$this->urls        = array();
+		$this->titles      = array();
+		$this->html_hashes = array();
+	}
+
+	/**
+	 * Main function. Performs some preprocessing on the input text and pass
+	 * it through the document gamut.
+	 *
+	 * @api
+	 *
+	 * @param  string $text
+	 * @return string
+	 */
+	public function transform($text) {
+		$this->setup();
+	
+		# Remove UTF-8 BOM and marker character in input, if present.
+		$text = preg_replace('{^\xEF\xBB\xBF|\x1A}', '', $text);
+
+		# Standardize line endings:
+		#   DOS to Unix and Mac to Unix
+		$text = preg_replace('{\r\n?}', "\n", $text);
+
+		# Make sure $text ends with a couple of newlines:
+		$text .= "\n\n";
+
+		# Convert all tabs to spaces.
+		$text = $this->detab($text);
+
+		# Turn block-level HTML blocks into hash entries
+		$text = $this->hashHTMLBlocks($text);
+
+		# Strip any lines consisting only of spaces and tabs.
+		# This makes subsequent regexen easier to write, because we can
+		# match consecutive blank lines with /\n+/ instead of something
+		# contorted like /[ ]*\n+/ .
+		$text = preg_replace('/^[ ]+$/m', '', $text);
+
+		# Run document gamut methods.
+		foreach ($this->document_gamut as $method => $priority) {
+			$text = $this->$method($text);
+		}
+		
+		$this->teardown();
+
+		return $text . "\n";
+	}
+
+	/**
+	 * Define the document gamut
+	 * @var array
+	 */
+	protected $document_gamut = array(
+		// Strip link definitions, store in hashes.
+		"stripLinkDefinitions" => 20,
+		"runBasicBlockGamut"   => 30,
+	);
+
+	/**
+	 * Strips link definitions from text, stores the URLs and titles in
+	 * hash references
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function stripLinkDefinitions($text) {
+	
+		$less_than_tab = $this->tab_width - 1;
+
+		// Link defs are in the form: ^[id]: url "optional title"
+		$text = preg_replace_callback('{
+							^[ ]{0,'.$less_than_tab.'}\[(.+)\][ ]?:	# id = $1
+							  [ ]*
+							  \n?				# maybe *one* newline
+							  [ ]*
+							(?:
+							  <(.+?)>			# url = $2
+							|
+							  (\S+?)			# url = $3
+							)
+							  [ ]*
+							  \n?				# maybe one newline
+							  [ ]*
+							(?:
+								(?<=\s)			# lookbehind for whitespace
+								["(]
+								(.*?)			# title = $4
+								[")]
+								[ ]*
+							)?	# title is optional
+							(?:\n+|\Z)
+			}xm',
+			array($this, '_stripLinkDefinitions_callback'),
+			$text
+		);
+		return $text;
+	}
+
+	/**
+	 * The callback to strip link definitions
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _stripLinkDefinitions_callback($matches) {
+		$link_id = strtolower($matches[1]);
+		$url = $matches[2] == '' ? $matches[3] : $matches[2];
+		$this->urls[$link_id] = $url;
+		$this->titles[$link_id] =& $matches[4];
+		return ''; // String that will replace the block
+	}
+
+	/**
+	 * Hashify HTML blocks
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function hashHTMLBlocks($text) {
+		if ($this->no_markup) {
+			return $text;
+		}
+
+		$less_than_tab = $this->tab_width - 1;
+
+		/**
+		 * Hashify HTML blocks:
+		 *
+		 * We only want to do this for block-level HTML tags, such as headers,
+		 * lists, and tables. That's because we still want to wrap <p>s around
+		 * "paragraphs" that are wrapped in non-block-level tags, such as
+		 * anchors, phrase emphasis, and spans. The list of tags we're looking
+		 * for is hard-coded:
+		 *
+		 * *  List "a" is made of tags which can be both inline or block-level.
+		 *    These will be treated block-level when the start tag is alone on 
+		 *    its line, otherwise they're not matched here and will be taken as 
+		 *    inline later.
+		 * *  List "b" is made of tags which are always block-level;
+		 */
+		$block_tags_a_re = 'ins|del';
+		$block_tags_b_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|'.
+						   'script|noscript|style|form|fieldset|iframe|math|svg|'.
+						   'article|section|nav|aside|hgroup|header|footer|'.
+						   'figure';
+
+		// Regular expression for the content of a block tag.
+		$nested_tags_level = 4;
+		$attr = '
+			(?>				# optional tag attributes
+			  \s			# starts with whitespace
+			  (?>
+				[^>"/]+		# text outside quotes
+			  |
+				/+(?!>)		# slash not followed by ">"
+			  |
+				"[^"]*"		# text inside double quotes (tolerate ">")
+			  |
+				\'[^\']*\'	# text inside single quotes (tolerate ">")
+			  )*
+			)?	
+			';
+		$content =
+			str_repeat('
+				(?>
+				  [^<]+			# content without tag
+				|
+				  <\2			# nested opening tag
+					'.$attr.'	# attributes
+					(?>
+					  />
+					|
+					  >', $nested_tags_level).	// end of opening tag
+					  '.*?'.					// last level nested tag content
+			str_repeat('
+					  </\2\s*>	# closing nested tag
+					)
+				  |				
+					<(?!/\2\s*>	# other tags with a different name
+				  )
+				)*',
+				$nested_tags_level);
+		$content2 = str_replace('\2', '\3', $content);
+
+		/**
+		 * First, look for nested blocks, e.g.:
+		 * 	<div>
+		 * 		<div>
+		 * 		tags for inner block must be indented.
+		 * 		</div>
+		 * 	</div>
+		 *
+		 * The outermost tags must start at the left margin for this to match,
+		 * and the inner nested divs must be indented.
+		 * We need to do this before the next, more liberal match, because the
+		 * next match will start at the first `<div>` and stop at the
+		 * first `</div>`.
+		 */
+		$text = preg_replace_callback('{(?>
+			(?>
+				(?<=\n)			# Starting on its own line
+				|				# or
+				\A\n?			# the at beginning of the doc
+			)
+			(						# save in $1
+
+			  # Match from `\n<tag>` to `</tag>\n`, handling nested tags 
+			  # in between.
+					
+						[ ]{0,'.$less_than_tab.'}
+						<('.$block_tags_b_re.')# start tag = $2
+						'.$attr.'>			# attributes followed by > and \n
+						'.$content.'		# content, support nesting
+						</\2>				# the matching end tag
+						[ ]*				# trailing spaces/tabs
+						(?=\n+|\Z)	# followed by a newline or end of document
+
+			| # Special version for tags of group a.
+
+						[ ]{0,'.$less_than_tab.'}
+						<('.$block_tags_a_re.')# start tag = $3
+						'.$attr.'>[ ]*\n	# attributes followed by >
+						'.$content2.'		# content, support nesting
+						</\3>				# the matching end tag
+						[ ]*				# trailing spaces/tabs
+						(?=\n+|\Z)	# followed by a newline or end of document
+					
+			| # Special case just for <hr />. It was easier to make a special 
+			  # case than to make the other regex more complicated.
+			
+						[ ]{0,'.$less_than_tab.'}
+						<(hr)				# start tag = $2
+						'.$attr.'			# attributes
+						/?>					# the matching end tag
+						[ ]*
+						(?=\n{2,}|\Z)		# followed by a blank line or end of document
+			
+			| # Special case for standalone HTML comments:
+			
+					[ ]{0,'.$less_than_tab.'}
+					(?s:
+						<!-- .*? -->
+					)
+					[ ]*
+					(?=\n{2,}|\Z)		# followed by a blank line or end of document
+			
+			| # PHP and ASP-style processor instructions (<? and <%)
+			
+					[ ]{0,'.$less_than_tab.'}
+					(?s:
+						<([?%])			# $2
+						.*?
+						\2>
+					)
+					[ ]*
+					(?=\n{2,}|\Z)		# followed by a blank line or end of document
+					
+			)
+			)}Sxmi',
+			array($this, '_hashHTMLBlocks_callback'),
+			$text
+		);
+
+		return $text;
+	}
+
+	/**
+	 * The callback for hashing HTML blocks
+	 * @param  string $matches
+	 * @return string
+	 */
+	protected function _hashHTMLBlocks_callback($matches) {
+		$text = $matches[1];
+		$key  = $this->hashBlock($text);
+		return "\n\n$key\n\n";
+	}
+	
+	/**
+	 * Called whenever a tag must be hashed when a function insert an atomic 
+	 * element in the text stream. Passing $text to through this function gives
+	 * a unique text-token which will be reverted back when calling unhash.
+	 *
+	 * The $boundary argument specify what character should be used to surround
+	 * the token. By convension, "B" is used for block elements that needs not
+	 * to be wrapped into paragraph tags at the end, ":" is used for elements
+	 * that are word separators and "X" is used in the general case.
+	 *
+	 * @param  string $text
+	 * @param  string $boundary
+	 * @return string
+	 */
+	protected function hashPart($text, $boundary = 'X') {
+		// Swap back any tag hash found in $text so we do not have to `unhash`
+		// multiple times at the end.
+		$text = $this->unhash($text);
+		
+		// Then hash the block.
+		static $i = 0;
+		$key = "$boundary\x1A" . ++$i . $boundary;
+		$this->html_hashes[$key] = $text;
+		return $key; // String that will replace the tag.
+	}
+
+	/**
+	 * Shortcut function for hashPart with block-level boundaries.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function hashBlock($text) {
+		return $this->hashPart($text, 'B');
+	}
+
+	/**
+	 * Define the block gamut - these are all the transformations that form
+	 * block-level tags like paragraphs, headers, and list items.
+	 * @var array
+	 */
+	protected $block_gamut = array(
+		"doHeaders"         => 10,
+		"doHorizontalRules" => 20,
+		"doLists"           => 40,
+		"doCodeBlocks"      => 50,
+		"doBlockQuotes"     => 60,
+	);
+
+	/**
+	 * Run block gamut tranformations.
+	 *
+	 * We need to escape raw HTML in Markdown source before doing anything 
+	 * else. This need to be done for each block, and not only at the 
+	 * begining in the Markdown function since hashed blocks can be part of
+	 * list items and could have been indented. Indented blocks would have 
+	 * been seen as a code block in a previous pass of hashHTMLBlocks.
+	 *
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function runBlockGamut($text) {
+		$text = $this->hashHTMLBlocks($text);
+		return $this->runBasicBlockGamut($text);
+	}
+
+	/**
+	 * Run block gamut tranformations, without hashing HTML blocks. This is 
+	 * useful when HTML blocks are known to be already hashed, like in the first
+	 * whole-document pass.
+	 *
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function runBasicBlockGamut($text) {
+	
+		foreach ($this->block_gamut as $method => $priority) {
+			$text = $this->$method($text);
+		}
+		
+		// Finally form paragraph and restore hashed blocks.
+		$text = $this->formParagraphs($text);
+
+		return $text;
+	}
+
+	/**
+	 * Convert horizontal rules
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doHorizontalRules($text) {
+		return preg_replace(
+			'{
+				^[ ]{0,3}	# Leading space
+				([-*_])		# $1: First marker
+				(?>			# Repeated marker group
+					[ ]{0,2}	# Zero, one, or two spaces.
+					\1			# Marker character
+				){2,}		# Group repeated at least twice
+				[ ]*		# Tailing spaces
+				$			# End of line.
+			}mx',
+			"\n".$this->hashBlock("<hr$this->empty_element_suffix")."\n", 
+			$text
+		);
+	}
+
+	/**
+	 * These are all the transformations that occur *within* block-level
+	 * tags like paragraphs, headers, and list items.
+	 * @var array
+	 */
+	protected $span_gamut = array(
+		// Process character escapes, code spans, and inline HTML
+		// in one shot.
+		"parseSpan"           => -30,
+		// Process anchor and image tags. Images must come first,
+		// because ![foo][f] looks like an anchor.
+		"doImages"            =>  10,
+		"doAnchors"           =>  20,
+		// Make links out of things like `<https://example.com/>`
+		// Must come after doAnchors, because you can use < and >
+		// delimiters in inline links like [this](<url>).
+		"doAutoLinks"         =>  30,
+		"encodeAmpsAndAngles" =>  40,
+		"doItalicsAndBold"    =>  50,
+		"doHardBreaks"        =>  60,
+	);
+
+	/**
+	 * Run span gamut transformations
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function runSpanGamut($text) {
+		foreach ($this->span_gamut as $method => $priority) {
+			$text = $this->$method($text);
+		}
+
+		return $text;
+	}
+
+	/**
+	 * Do hard breaks
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doHardBreaks($text) {
+		if ($this->hard_wrap) {
+			return preg_replace_callback('/ *\n/', 
+				array($this, '_doHardBreaks_callback'), $text);
+		} else {
+			return preg_replace_callback('/ {2,}\n/', 
+				array($this, '_doHardBreaks_callback'), $text);
+		}
+	}
+
+	/**
+	 * Trigger part hashing for the hard break (callback method)
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doHardBreaks_callback($matches) {
+		return $this->hashPart("<br$this->empty_element_suffix\n");
+	}
+
+	/**
+	 * Turn Markdown link shortcuts into XHTML <a> tags.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doAnchors($text) {
+		if ($this->in_anchor) {
+			return $text;
+		}
+		$this->in_anchor = true;
+		
+		// First, handle reference-style links: [link text] [id]
+		$text = preg_replace_callback('{
+			(					# wrap whole match in $1
+			  \[
+				('.$this->nested_brackets_re.')	# link text = $2
+			  \]
+
+			  [ ]?				# one optional space
+			  (?:\n[ ]*)?		# one optional newline followed by spaces
+
+			  \[
+				(.*?)		# id = $3
+			  \]
+			)
+			}xs',
+			array($this, '_doAnchors_reference_callback'), $text);
+
+		// Next, inline-style links: [link text](url "optional title")
+		$text = preg_replace_callback('{
+			(				# wrap whole match in $1
+			  \[
+				('.$this->nested_brackets_re.')	# link text = $2
+			  \]
+			  \(			# literal paren
+				[ \n]*
+				(?:
+					<(.+?)>	# href = $3
+				|
+					('.$this->nested_url_parenthesis_re.')	# href = $4
+				)
+				[ \n]*
+				(			# $5
+				  ([\'"])	# quote char = $6
+				  (.*?)		# Title = $7
+				  \6		# matching quote
+				  [ \n]*	# ignore any spaces/tabs between closing quote and )
+				)?			# title is optional
+			  \)
+			)
+			}xs',
+			array($this, '_doAnchors_inline_callback'), $text);
+
+		// Last, handle reference-style shortcuts: [link text]
+		// These must come last in case you've also got [link text][1]
+		// or [link text](/foo)
+		$text = preg_replace_callback('{
+			(					# wrap whole match in $1
+			  \[
+				([^\[\]]+)		# link text = $2; can\'t contain [ or ]
+			  \]
+			)
+			}xs',
+			array($this, '_doAnchors_reference_callback'), $text);
+
+		$this->in_anchor = false;
+		return $text;
+	}
+
+	/**
+	 * Callback method to parse referenced anchors
+	 * @param  string $matches
+	 * @return string
+	 */
+	protected function _doAnchors_reference_callback($matches) {
+		$whole_match =  $matches[1];
+		$link_text   =  $matches[2];
+		$link_id     =& $matches[3];
+
+		if ($link_id == "") {
+			// for shortcut links like [this][] or [this].
+			$link_id = $link_text;
+		}
+		
+		// lower-case and turn embedded newlines into spaces
+		$link_id = strtolower($link_id);
+		$link_id = preg_replace('{[ ]?\n}', ' ', $link_id);
+
+		if (isset($this->urls[$link_id])) {
+			$url = $this->urls[$link_id];
+			$url = $this->encodeURLAttribute($url);
+			
+			$result = "<a href=\"$url\"";
+			if ( isset( $this->titles[$link_id] ) ) {
+				$title = $this->titles[$link_id];
+				$title = $this->encodeAttribute($title);
+				$result .=  " title=\"$title\"";
+			}
+		
+			$link_text = $this->runSpanGamut($link_text);
+			$result .= ">$link_text</a>";
+			$result = $this->hashPart($result);
+		} else {
+			$result = $whole_match;
+		}
+		return $result;
+	}
+
+	/**
+	 * Callback method to parse inline anchors
+	 * @param  string $matches
+	 * @return string
+	 */
+	protected function _doAnchors_inline_callback($matches) {
+		$whole_match	=  $matches[1];
+		$link_text		=  $this->runSpanGamut($matches[2]);
+		$url			=  $matches[3] == '' ? $matches[4] : $matches[3];
+		$title			=& $matches[7];
+
+		// If the URL was of the form <s p a c e s> it got caught by the HTML
+		// tag parser and hashed. Need to reverse the process before using
+		// the URL.
+		$unhashed = $this->unhash($url);
+		if ($unhashed != $url)
+			$url = preg_replace('/^<(.*)>$/', '\1', $unhashed);
+
+		$url = $this->encodeURLAttribute($url);
+
+		$result = "<a href=\"$url\"";
+		if (isset($title)) {
+			$title = $this->encodeAttribute($title);
+			$result .=  " title=\"$title\"";
+		}
+		
+		$link_text = $this->runSpanGamut($link_text);
+		$result .= ">$link_text</a>";
+
+		return $this->hashPart($result);
+	}
+
+	/**
+	 * Turn Markdown image shortcuts into <img> tags.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doImages($text) {
+		// First, handle reference-style labeled images: ![alt text][id]
+		$text = preg_replace_callback('{
+			(				# wrap whole match in $1
+			  !\[
+				('.$this->nested_brackets_re.')		# alt text = $2
+			  \]
+
+			  [ ]?				# one optional space
+			  (?:\n[ ]*)?		# one optional newline followed by spaces
+
+			  \[
+				(.*?)		# id = $3
+			  \]
+
+			)
+			}xs', 
+			array($this, '_doImages_reference_callback'), $text);
+
+		// Next, handle inline images:  ![alt text](url "optional title")
+		// Don't forget: encode * and _
+		$text = preg_replace_callback('{
+			(				# wrap whole match in $1
+			  !\[
+				('.$this->nested_brackets_re.')		# alt text = $2
+			  \]
+			  \s?			# One optional whitespace character
+			  \(			# literal paren
+				[ \n]*
+				(?:
+					<(\S*)>	# src url = $3
+				|
+					('.$this->nested_url_parenthesis_re.')	# src url = $4
+				)
+				[ \n]*
+				(			# $5
+				  ([\'"])	# quote char = $6
+				  (.*?)		# title = $7
+				  \6		# matching quote
+				  [ \n]*
+				)?			# title is optional
+			  \)
+			)
+			}xs',
+			array($this, '_doImages_inline_callback'), $text);
+
+		return $text;
+	}
+
+	/**
+	 * Callback to parse references image tags
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doImages_reference_callback($matches) {
+		$whole_match = $matches[1];
+		$alt_text    = $matches[2];
+		$link_id     = strtolower($matches[3]);
+
+		if ($link_id == "") {
+			$link_id = strtolower($alt_text); // for shortcut links like ![this][].
+		}
+
+		$alt_text = $this->encodeAttribute($alt_text);
+		if (isset($this->urls[$link_id])) {
+			$url = $this->encodeURLAttribute($this->urls[$link_id]);
+			$result = "<img src=\"$url\" alt=\"$alt_text\"";
+			if (isset($this->titles[$link_id])) {
+				$title = $this->titles[$link_id];
+				$title = $this->encodeAttribute($title);
+				$result .=  " title=\"$title\"";
+			}
+			$result .= $this->empty_element_suffix;
+			$result = $this->hashPart($result);
+		} else {
+			// If there's no such link ID, leave intact:
+			$result = $whole_match;
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Callback to parse inline image tags
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doImages_inline_callback($matches) {
+		$whole_match	= $matches[1];
+		$alt_text		= $matches[2];
+		$url			= $matches[3] == '' ? $matches[4] : $matches[3];
+		$title			=& $matches[7];
+
+		$alt_text = $this->encodeAttribute($alt_text);
+		$url = $this->encodeURLAttribute($url);
+		$result = "<img src=\"$url\" alt=\"$alt_text\"";
+		if (isset($title)) {
+			$title = $this->encodeAttribute($title);
+			$result .=  " title=\"$title\""; // $title already quoted
+		}
+		$result .= $this->empty_element_suffix;
+
+		return $this->hashPart($result);
+	}
+
+	/**
+	 * Parse Markdown heading elements to HTML
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doHeaders($text) {
+		/**
+		 * Setext-style headers:
+		 *	  Header 1
+		 *	  ========
+		 *  
+		 *	  Header 2
+		 *	  --------
+		 */
+		$text = preg_replace_callback('{ ^(.+?)[ ]*\n(=+|-+)[ ]*\n+ }mx',
+			array($this, '_doHeaders_callback_setext'), $text);
+
+		/**
+		 * atx-style headers:
+		 *   # Header 1
+		 *   ## Header 2
+		 *   ## Header 2 with closing hashes ##
+		 *   ...
+		 *   ###### Header 6
+		 */
+		$text = preg_replace_callback('{
+				^(\#{1,6})	# $1 = string of #\'s
+				[ ]*
+				(.+?)		# $2 = Header text
+				[ ]*
+				\#*			# optional closing #\'s (not counted)
+				\n+
+			}xm',
+			array($this, '_doHeaders_callback_atx'), $text);
+
+		return $text;
+	}
+
+	/**
+	 * Setext header parsing callback
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doHeaders_callback_setext($matches) {
+		// Terrible hack to check we haven't found an empty list item.
+		if ($matches[2] == '-' && preg_match('{^-(?: |$)}', $matches[1])) {
+			return $matches[0];
+		}
+		
+		$level = $matches[2]{0} == '=' ? 1 : 2;
+
+		// ID attribute generation
+		$idAtt = $this->_generateIdFromHeaderValue($matches[1]);
+
+		$block = "<h$level$idAtt>".$this->runSpanGamut($matches[1])."</h$level>";
+		return "\n" . $this->hashBlock($block) . "\n\n";
+	}
+
+	/**
+	 * ATX header parsing callback
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doHeaders_callback_atx($matches) {
+		// ID attribute generation
+		$idAtt = $this->_generateIdFromHeaderValue($matches[2]);
+
+		$level = strlen($matches[1]);
+		$block = "<h$level$idAtt>".$this->runSpanGamut($matches[2])."</h$level>";
+		return "\n" . $this->hashBlock($block) . "\n\n";
+	}
+
+	/**
+	 * If a header_id_func property is set, we can use it to automatically
+	 * generate an id attribute.
+	 *
+	 * This method returns a string in the form id="foo", or an empty string
+	 * otherwise.
+	 * @param  string $headerValue
+	 * @return string
+	 */
+	protected function _generateIdFromHeaderValue($headerValue) {		
+		if (!is_callable($this->header_id_func)) {
+			return "";
+		}
+
+		$idValue = call_user_func($this->header_id_func, $headerValue);
+		if (!$idValue) {
+			return "";
+		}
+
+		return ' id="' . $this->encodeAttribute($idValue) . '"';
+	}
+
+	/**
+	 * Form HTML ordered (numbered) and unordered (bulleted) lists.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doLists($text) {
+		$less_than_tab = $this->tab_width - 1;
+
+		// Re-usable patterns to match list item bullets and number markers:
+		$marker_ul_re  = '[*+-]';
+		$marker_ol_re  = '\d+[\.]';
+
+		$markers_relist = array(
+			$marker_ul_re => $marker_ol_re,
+			$marker_ol_re => $marker_ul_re,
+			);
+
+		foreach ($markers_relist as $marker_re => $other_marker_re) {
+			// Re-usable pattern to match any entirel ul or ol list:
+			$whole_list_re = '
+				(								# $1 = whole list
+				  (								# $2
+					([ ]{0,'.$less_than_tab.'})	# $3 = number of spaces
+					('.$marker_re.')			# $4 = first list item marker
+					[ ]+
+				  )
+				  (?s:.+?)
+				  (								# $5
+					  \z
+					|
+					  \n{2,}
+					  (?=\S)
+					  (?!						# Negative lookahead for another list item marker
+						[ ]*
+						'.$marker_re.'[ ]+
+					  )
+					|
+					  (?=						# Lookahead for another kind of list
+					    \n
+						\3						# Must have the same indentation
+						'.$other_marker_re.'[ ]+
+					  )
+				  )
+				)
+			'; // mx
+			
+			// We use a different prefix before nested lists than top-level lists.
+			//See extended comment in _ProcessListItems().
+		
+			if ($this->list_level) {
+				$text = preg_replace_callback('{
+						^
+						'.$whole_list_re.'
+					}mx',
+					array($this, '_doLists_callback'), $text);
+			} else {
+				$text = preg_replace_callback('{
+						(?:(?<=\n)\n|\A\n?) # Must eat the newline
+						'.$whole_list_re.'
+					}mx',
+					array($this, '_doLists_callback'), $text);
+			}
+		}
+
+		return $text;
+	}
+
+	/**
+	 * List parsing callback
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doLists_callback($matches) {
+		// Re-usable patterns to match list item bullets and number markers:
+		$marker_ul_re  = '[*+-]';
+		$marker_ol_re  = '\d+[\.]';
+		$marker_any_re = "(?:$marker_ul_re|$marker_ol_re)";
+		$marker_ol_start_re = '[0-9]+';
+
+		$list = $matches[1];
+		$list_type = preg_match("/$marker_ul_re/", $matches[4]) ? "ul" : "ol";
+
+		$marker_any_re = ( $list_type == "ul" ? $marker_ul_re : $marker_ol_re );
+
+		$list .= "\n";
+		$result = $this->processListItems($list, $marker_any_re);
+
+		$ol_start = 1;
+		if ($this->enhanced_ordered_list) {
+			// Get the start number for ordered list.
+			if ($list_type == 'ol') {
+				$ol_start_array = array();
+				$ol_start_check = preg_match("/$marker_ol_start_re/", $matches[4], $ol_start_array);
+				if ($ol_start_check){
+					$ol_start = $ol_start_array[0];
+				}
+			}
+		}
+
+		if ($ol_start > 1 && $list_type == 'ol'){
+			$result = $this->hashBlock("<$list_type start=\"$ol_start\">\n" . $result . "</$list_type>");
+		} else {
+			$result = $this->hashBlock("<$list_type>\n" . $result . "</$list_type>");
+		}
+		return "\n". $result ."\n\n";
+	}
+
+	/**
+	 * Nesting tracker for list levels
+	 * @var integer
+	 */
+	protected $list_level = 0;
+
+	/**
+	 * Process the contents of a single ordered or unordered list, splitting it
+	 * into individual list items.
+	 * @param  string $list_str
+	 * @param  string $marker_any_re
+	 * @return string
+	 */
+	protected function processListItems($list_str, $marker_any_re) {
+		/**
+		 * The $this->list_level global keeps track of when we're inside a list.
+		 * Each time we enter a list, we increment it; when we leave a list,
+		 * we decrement. If it's zero, we're not in a list anymore.
+		 *
+		 * We do this because when we're not inside a list, we want to treat
+		 * something like this:
+		 *
+		 *		I recommend upgrading to version
+		 *		8. Oops, now this line is treated
+		 *		as a sub-list.
+		 *
+		 * As a single paragraph, despite the fact that the second line starts
+		 * with a digit-period-space sequence.
+		 *
+		 * Whereas when we're inside a list (or sub-list), that line will be
+		 * treated as the start of a sub-list. What a kludge, huh? This is
+		 * an aspect of Markdown's syntax that's hard to parse perfectly
+		 * without resorting to mind-reading. Perhaps the solution is to
+		 * change the syntax rules such that sub-lists must start with a
+		 * starting cardinal number; e.g. "1." or "a.".
+		 */		
+		$this->list_level++;
+
+		// Trim trailing blank lines:
+		$list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
+
+		$list_str = preg_replace_callback('{
+			(\n)?							# leading line = $1
+			(^[ ]*)							# leading whitespace = $2
+			('.$marker_any_re.'				# list marker and space = $3
+				(?:[ ]+|(?=\n))	# space only required if item is not empty
+			)
+			((?s:.*?))						# list item text   = $4
+			(?:(\n+(?=\n))|\n)				# tailing blank line = $5
+			(?= \n* (\z | \2 ('.$marker_any_re.') (?:[ ]+|(?=\n))))
+			}xm',
+			array($this, '_processListItems_callback'), $list_str);
+
+		$this->list_level--;
+		return $list_str;
+	}
+
+	/**
+	 * List item parsing callback
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _processListItems_callback($matches) {
+		$item = $matches[4];
+		$leading_line =& $matches[1];
+		$leading_space =& $matches[2];
+		$marker_space = $matches[3];
+		$tailing_blank_line =& $matches[5];
+
+		if ($leading_line || $tailing_blank_line || 
+			preg_match('/\n{2,}/', $item))
+		{
+			// Replace marker with the appropriate whitespace indentation
+			$item = $leading_space . str_repeat(' ', strlen($marker_space)) . $item;
+			$item = $this->runBlockGamut($this->outdent($item)."\n");
+		} else {
+			// Recursion for sub-lists:
+			$item = $this->doLists($this->outdent($item));
+			$item = $this->formParagraphs($item, false);
+		}
+
+		return "<li>" . $item . "</li>\n";
+	}
+
+	/**
+	 * Process Markdown `<pre><code>` blocks.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doCodeBlocks($text) {
+		$text = preg_replace_callback('{
+				(?:\n\n|\A\n?)
+				(	            # $1 = the code block -- one or more lines, starting with a space/tab
+				  (?>
+					[ ]{'.$this->tab_width.'}  # Lines must start with a tab or a tab-width of spaces
+					.*\n+
+				  )+
+				)
+				((?=^[ ]{0,'.$this->tab_width.'}\S)|\Z)	# Lookahead for non-space at line-start, or end of doc
+			}xm',
+			array($this, '_doCodeBlocks_callback'), $text);
+
+		return $text;
+	}
+
+	/**
+	 * Code block parsing callback
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doCodeBlocks_callback($matches) {
+		$codeblock = $matches[1];
+
+		$codeblock = $this->outdent($codeblock);
+		if ($this->code_block_content_func) {
+			$codeblock = call_user_func($this->code_block_content_func, $codeblock, "");
+		} else {
+			$codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
+		}
+
+		# trim leading newlines and trailing newlines
+		$codeblock = preg_replace('/\A\n+|\n+\z/', '', $codeblock);
+
+		$codeblock = "<pre><code>$codeblock\n</code></pre>";
+		return "\n\n" . $this->hashBlock($codeblock) . "\n\n";
+	}
+
+	/**
+	 * Create a code span markup for $code. Called from handleSpanToken.
+	 * @param  string $code
+	 * @return string
+	 */
+	protected function makeCodeSpan($code) {
+		if ($this->code_span_content_func) {
+			$code = call_user_func($this->code_span_content_func, $code);
+		} else {
+			$code = htmlspecialchars(trim($code), ENT_NOQUOTES);
+		}
+		return $this->hashPart("<code>$code</code>");
+	}
+
+	/**
+	 * Define the emphasis operators with their regex matches
+	 * @var array
+	 */
+	protected $em_relist = array(
+		''  => '(?:(?<!\*)\*(?!\*)|(?<!_)_(?!_))(?![\.,:;]?\s)',
+		'*' => '(?<![\s*])\*(?!\*)',
+		'_' => '(?<![\s_])_(?!_)',
+	);
+
+	/**
+	 * Define the strong operators with their regex matches
+	 * @var array
+	 */
+	protected $strong_relist = array(
+		''   => '(?:(?<!\*)\*\*(?!\*)|(?<!_)__(?!_))(?![\.,:;]?\s)',
+		'**' => '(?<![\s*])\*\*(?!\*)',
+		'__' => '(?<![\s_])__(?!_)',
+	);
+
+	/**
+	 * Define the emphasis + strong operators with their regex matches
+	 * @var array
+	 */
+	protected $em_strong_relist = array(
+		''    => '(?:(?<!\*)\*\*\*(?!\*)|(?<!_)___(?!_))(?![\.,:;]?\s)',
+		'***' => '(?<![\s*])\*\*\*(?!\*)',
+		'___' => '(?<![\s_])___(?!_)',
+	);
+
+	/**
+	 * Container for prepared regular expressions
+	 * @var array
+	 */
+	protected $em_strong_prepared_relist;
+	
+	/**
+	 * Prepare regular expressions for searching emphasis tokens in any
+	 * context.
+	 * @return void
+	 */
+	protected function prepareItalicsAndBold() {
+		foreach ($this->em_relist as $em => $em_re) {
+			foreach ($this->strong_relist as $strong => $strong_re) {
+				// Construct list of allowed token expressions.
+				$token_relist = array();
+				if (isset($this->em_strong_relist["$em$strong"])) {
+					$token_relist[] = $this->em_strong_relist["$em$strong"];
+				}
+				$token_relist[] = $em_re;
+				$token_relist[] = $strong_re;
+				
+				// Construct master expression from list.
+				$token_re = '{(' . implode('|', $token_relist) . ')}';
+				$this->em_strong_prepared_relist["$em$strong"] = $token_re;
+			}
+		}
+	}
+
+	/**
+	 * Convert Markdown italics (emphasis) and bold (strong) to HTML
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doItalicsAndBold($text) {
+		$token_stack = array('');
+		$text_stack = array('');
+		$em = '';
+		$strong = '';
+		$tree_char_em = false;
+		
+		while (1) {
+			// Get prepared regular expression for seraching emphasis tokens
+			// in current context.
+			$token_re = $this->em_strong_prepared_relist["$em$strong"];
+			
+			// Each loop iteration search for the next emphasis token. 
+			// Each token is then passed to handleSpanToken.
+			$parts = preg_split($token_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
+			$text_stack[0] .= $parts[0];
+			$token =& $parts[1];
+			$text =& $parts[2];
+			
+			if (empty($token)) {
+				// Reached end of text span: empty stack without emitting.
+				// any more emphasis.
+				while ($token_stack[0]) {
+					$text_stack[1] .= array_shift($token_stack);
+					$text_stack[0] .= array_shift($text_stack);
+				}
+				break;
+			}
+			
+			$token_len = strlen($token);
+			if ($tree_char_em) {
+				// Reached closing marker while inside a three-char emphasis.
+				if ($token_len == 3) {
+					// Three-char closing marker, close em and strong.
+					array_shift($token_stack);
+					$span = array_shift($text_stack);
+					$span = $this->runSpanGamut($span);
+					$span = "<strong><em>$span</em></strong>";
+					$text_stack[0] .= $this->hashPart($span);
+					$em = '';
+					$strong = '';
+				} else {
+					// Other closing marker: close one em or strong and
+					// change current token state to match the other
+					$token_stack[0] = str_repeat($token{0}, 3-$token_len);
+					$tag = $token_len == 2 ? "strong" : "em";
+					$span = $text_stack[0];
+					$span = $this->runSpanGamut($span);
+					$span = "<$tag>$span</$tag>";
+					$text_stack[0] = $this->hashPart($span);
+					$$tag = ''; // $$tag stands for $em or $strong
+				}
+				$tree_char_em = false;
+			} else if ($token_len == 3) {
+				if ($em) {
+					// Reached closing marker for both em and strong.
+					// Closing strong marker:
+					for ($i = 0; $i < 2; ++$i) {
+						$shifted_token = array_shift($token_stack);
+						$tag = strlen($shifted_token) == 2 ? "strong" : "em";
+						$span = array_shift($text_stack);
+						$span = $this->runSpanGamut($span);
+						$span = "<$tag>$span</$tag>";
+						$text_stack[0] .= $this->hashPart($span);
+						$$tag = ''; // $$tag stands for $em or $strong
+					}
+				} else {
+					// Reached opening three-char emphasis marker. Push on token 
+					// stack; will be handled by the special condition above.
+					$em = $token{0};
+					$strong = "$em$em";
+					array_unshift($token_stack, $token);
+					array_unshift($text_stack, '');
+					$tree_char_em = true;
+				}
+			} else if ($token_len == 2) {
+				if ($strong) {
+					// Unwind any dangling emphasis marker:
+					if (strlen($token_stack[0]) == 1) {
+						$text_stack[1] .= array_shift($token_stack);
+						$text_stack[0] .= array_shift($text_stack);
+					}
+					// Closing strong marker:
+					array_shift($token_stack);
+					$span = array_shift($text_stack);
+					$span = $this->runSpanGamut($span);
+					$span = "<strong>$span</strong>";
+					$text_stack[0] .= $this->hashPart($span);
+					$strong = '';
+				} else {
+					array_unshift($token_stack, $token);
+					array_unshift($text_stack, '');
+					$strong = $token;
+				}
+			} else {
+				// Here $token_len == 1
+				if ($em) {
+					if (strlen($token_stack[0]) == 1) {
+						// Closing emphasis marker:
+						array_shift($token_stack);
+						$span = array_shift($text_stack);
+						$span = $this->runSpanGamut($span);
+						$span = "<em>$span</em>";
+						$text_stack[0] .= $this->hashPart($span);
+						$em = '';
+					} else {
+						$text_stack[0] .= $token;
+					}
+				} else {
+					array_unshift($token_stack, $token);
+					array_unshift($text_stack, '');
+					$em = $token;
+				}
+			}
+		}
+		return $text_stack[0];
+	}
+
+	/**
+	 * Parse Markdown blockquotes to HTML
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doBlockQuotes($text) {
+		$text = preg_replace_callback('/
+			  (								# Wrap whole match in $1
+				(?>
+				  ^[ ]*>[ ]?			# ">" at the start of a line
+					.+\n					# rest of the first line
+				  (.+\n)*					# subsequent consecutive lines
+				  \n*						# blanks
+				)+
+			  )
+			/xm',
+			array($this, '_doBlockQuotes_callback'), $text);
+
+		return $text;
+	}
+
+	/**
+	 * Blockquote parsing callback
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doBlockQuotes_callback($matches) {
+		$bq = $matches[1];
+		// trim one level of quoting - trim whitespace-only lines
+		$bq = preg_replace('/^[ ]*>[ ]?|^[ ]+$/m', '', $bq);
+		$bq = $this->runBlockGamut($bq); // recurse
+
+		$bq = preg_replace('/^/m', "  ", $bq);
+		// These leading spaces cause problem with <pre> content, 
+		// so we need to fix that:
+		$bq = preg_replace_callback('{(\s*<pre>.+?</pre>)}sx', 
+			array($this, '_doBlockQuotes_callback2'), $bq);
+
+		return "\n" . $this->hashBlock("<blockquote>\n$bq\n</blockquote>") . "\n\n";
+	}
+
+	/**
+	 * Blockquote parsing callback
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doBlockQuotes_callback2($matches) {
+		$pre = $matches[1];
+		$pre = preg_replace('/^  /m', '', $pre);
+		return $pre;
+	}
+
+	/**
+	 * Parse paragraphs
+	 *
+	 * @param  string $text String to process in paragraphs
+	 * @param  boolean $wrap_in_p Whether paragraphs should be wrapped in <p> tags
+	 * @return string
+	 */
+	protected function formParagraphs($text, $wrap_in_p = true) {
+		// Strip leading and trailing lines:
+		$text = preg_replace('/\A\n+|\n+\z/', '', $text);
+
+		$grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
+
+		// Wrap <p> tags and unhashify HTML blocks
+		foreach ($grafs as $key => $value) {
+			if (!preg_match('/^B\x1A[0-9]+B$/', $value)) {
+				// Is a paragraph.
+				$value = $this->runSpanGamut($value);
+				if ($wrap_in_p) {
+					$value = preg_replace('/^([ ]*)/', "<p>", $value);
+					$value .= "</p>";
+				}
+				$grafs[$key] = $this->unhash($value);
+			} else {
+				// Is a block.
+				// Modify elements of @grafs in-place...
+				$graf = $value;
+				$block = $this->html_hashes[$graf];
+				$graf = $block;
+//				if (preg_match('{
+//					\A
+//					(							# $1 = <div> tag
+//					  <div  \s+
+//					  [^>]*
+//					  \b
+//					  markdown\s*=\s*  ([\'"])	#	$2 = attr quote char
+//					  1
+//					  \2
+//					  [^>]*
+//					  >
+//					)
+//					(							# $3 = contents
+//					.*
+//					)
+//					(</div>)					# $4 = closing tag
+//					\z
+//					}xs', $block, $matches))
+//				{
+//					list(, $div_open, , $div_content, $div_close) = $matches;
+//
+//					// We can't call Markdown(), because that resets the hash;
+//					// that initialization code should be pulled into its own sub, though.
+//					$div_content = $this->hashHTMLBlocks($div_content);
+//					
+//					// Run document gamut methods on the content.
+//					foreach ($this->document_gamut as $method => $priority) {
+//						$div_content = $this->$method($div_content);
+//					}
+//
+//					$div_open = preg_replace(
+//						'{\smarkdown\s*=\s*([\'"]).+?\1}', '', $div_open);
+//
+//					$graf = $div_open . "\n" . $div_content . "\n" . $div_close;
+//				}
+				$grafs[$key] = $graf;
+			}
+		}
+
+		return implode("\n\n", $grafs);
+	}
+
+	/**
+	 * Encode text for a double-quoted HTML attribute. This function
+	 * is *not* suitable for attributes enclosed in single quotes.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function encodeAttribute($text) {
+		$text = $this->encodeAmpsAndAngles($text);
+		$text = str_replace('"', '&quot;', $text);
+		return $text;
+	}
+
+	/**
+	 * Encode text for a double-quoted HTML attribute containing a URL,
+	 * applying the URL filter if set. Also generates the textual
+	 * representation for the URL (removing mailto: or tel:) storing it in $text.
+	 * This function is *not* suitable for attributes enclosed in single quotes.
+	 *
+	 * @param  string $url
+	 * @param  string &$text Passed by reference
+	 * @return string        URL
+	 */
+	protected function encodeURLAttribute($url, &$text = null) {
+		if ($this->url_filter_func) {
+			$url = call_user_func($this->url_filter_func, $url);
+		}
+
+		if (preg_match('{^mailto:}i', $url)) {
+			$url = $this->encodeEntityObfuscatedAttribute($url, $text, 7);
+		} else if (preg_match('{^tel:}i', $url)) {
+			$url = $this->encodeAttribute($url);
+			$text = substr($url, 4);
+		} else {
+			$url = $this->encodeAttribute($url);
+			$text = $url;
+		}
+
+		return $url;
+	}
+	
+	/**
+	 * Smart processing for ampersands and angle brackets that need to 
+	 * be encoded. Valid character entities are left alone unless the
+	 * no-entities mode is set.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function encodeAmpsAndAngles($text) {
+		if ($this->no_entities) {
+			$text = str_replace('&', '&amp;', $text);
+		} else {
+			// Ampersand-encoding based entirely on Nat Irons's Amputator
+			// MT plugin: <http://bumppo.net/projects/amputator/>
+			$text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/', 
+								'&amp;', $text);
+		}
+		// Encode remaining <'s
+		$text = str_replace('<', '&lt;', $text);
+
+		return $text;
+	}
+
+	/**
+	 * Parse Markdown automatic links to anchor HTML tags
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doAutoLinks($text) {
+		$text = preg_replace_callback('{<((https?|ftp|dict|tel):[^\'">\s]+)>}i',
+			array($this, '_doAutoLinks_url_callback'), $text);
+
+		// Email addresses: <address@domain.foo>
+		$text = preg_replace_callback('{
+			<
+			(?:mailto:)?
+			(
+				(?:
+					[-!#$%&\'*+/=?^_`.{|}~\w\x80-\xFF]+
+				|
+					".*?"
+				)
+				\@
+				(?:
+					[-a-z0-9\x80-\xFF]+(\.[-a-z0-9\x80-\xFF]+)*\.[a-z]+
+				|
+					\[[\d.a-fA-F:]+\]	# IPv4 & IPv6
+				)
+			)
+			>
+			}xi',
+			array($this, '_doAutoLinks_email_callback'), $text);
+
+		return $text;
+	}
+
+	/**
+	 * Parse URL callback
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doAutoLinks_url_callback($matches) {
+		$url = $this->encodeURLAttribute($matches[1], $text);
+		$link = "<a href=\"$url\">$text</a>";
+		return $this->hashPart($link);
+	}
+
+	/**
+	 * Parse email address callback
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doAutoLinks_email_callback($matches) {
+		$addr = $matches[1];
+		$url = $this->encodeURLAttribute("mailto:$addr", $text);
+		$link = "<a href=\"$url\">$text</a>";
+		return $this->hashPart($link);
+	}
+
+	/**
+	 * Input: some text to obfuscate, e.g. "mailto:foo@example.com"
+	 *
+	 * Output: the same text but with most characters encoded as either a
+	 *         decimal or hex entity, in the hopes of foiling most address
+	 *         harvesting spam bots. E.g.:
+	 *
+	 *        &#109;&#x61;&#105;&#x6c;&#116;&#x6f;&#58;&#x66;o&#111;
+	 *        &#x40;&#101;&#x78;&#97;&#x6d;&#112;&#x6c;&#101;&#46;&#x63;&#111;
+	 *        &#x6d;
+	 *
+	 * Note: the additional output $tail is assigned the same value as the
+	 * ouput, minus the number of characters specified by $head_length.
+	 *
+	 * Based by a filter by Matthew Wickline, posted to BBEdit-Talk.
+	 * With some optimizations by Milian Wolff. Forced encoding of HTML
+	 * attribute special characters by Allan Odgaard.
+	 *
+	 * @param  string  $text
+	 * @param  string  &$tail
+	 * @param  integer $head_length
+	 * @return string
+	 */
+	protected function encodeEntityObfuscatedAttribute($text, &$tail = null, $head_length = 0) {
+		if ($text == "") {
+			return $tail = "";
+		}
+
+		$chars = preg_split('/(?<!^)(?!$)/', $text);
+		$seed = (int)abs(crc32($text) / strlen($text)); // Deterministic seed.
+
+		foreach ($chars as $key => $char) {
+			$ord = ord($char);
+			// Ignore non-ascii chars.
+			if ($ord < 128) {
+				$r = ($seed * (1 + $key)) % 100; // Pseudo-random function.
+				// roughly 10% raw, 45% hex, 45% dec
+				// '@' *must* be encoded. I insist.
+				// '"' and '>' have to be encoded inside the attribute
+				if ($r > 90 && strpos('@"&>', $char) === false) {
+					/* do nothing */
+				} else if ($r < 45) {
+					$chars[$key] = '&#x'.dechex($ord).';';
+				} else {
+					$chars[$key] = '&#'.$ord.';';
+				}
+			}
+		}
+
+		$text = implode('', $chars);
+		$tail = $head_length ? implode('', array_slice($chars, $head_length)) : $text;
+
+		return $text;
+	}
+
+	/**
+	 * Take the string $str and parse it into tokens, hashing embeded HTML,
+	 * escaped characters and handling code spans.
+	 * @param  string $str
+	 * @return string
+	 */
+	protected function parseSpan($str) {
+		$output = '';
+		
+		$span_re = '{
+				(
+					\\\\'.$this->escape_chars_re.'
+				|
+					(?<![`\\\\])
+					`+						# code span marker
+			'.( $this->no_markup ? '' : '
+				|
+					<!--    .*?     -->		# comment
+				|
+					<\?.*?\?> | <%.*?%>		# processing instruction
+				|
+					<[!$]?[-a-zA-Z0-9:_]+	# regular tags
+					(?>
+						\s
+						(?>[^"\'>]+|"[^"]*"|\'[^\']*\')*
+					)?
+					>
+				|
+					<[-a-zA-Z0-9:_]+\s*/> # xml-style empty tag
+				|
+					</[-a-zA-Z0-9:_]+\s*> # closing tag
+			').'
+				)
+				}xs';
+
+		while (1) {
+			// Each loop iteration seach for either the next tag, the next 
+			// openning code span marker, or the next escaped character. 
+			// Each token is then passed to handleSpanToken.
+			$parts = preg_split($span_re, $str, 2, PREG_SPLIT_DELIM_CAPTURE);
+			
+			// Create token from text preceding tag.
+			if ($parts[0] != "") {
+				$output .= $parts[0];
+			}
+			
+			// Check if we reach the end.
+			if (isset($parts[1])) {
+				$output .= $this->handleSpanToken($parts[1], $parts[2]);
+				$str = $parts[2];
+			} else {
+				break;
+			}
+		}
+		
+		return $output;
+	}
+
+	/**
+	 * Handle $token provided by parseSpan by determining its nature and
+	 * returning the corresponding value that should replace it.
+	 * @param  string $token
+	 * @param  string &$str
+	 * @return string
+	 */
+	protected function handleSpanToken($token, &$str) {
+		switch ($token{0}) {
+			case "\\":
+				return $this->hashPart("&#". ord($token{1}). ";");
+			case "`":
+				// Search for end marker in remaining text.
+				if (preg_match('/^(.*?[^`])'.preg_quote($token).'(?!`)(.*)$/sm', 
+					$str, $matches))
+				{
+					$str = $matches[2];
+					$codespan = $this->makeCodeSpan($matches[1]);
+					return $this->hashPart($codespan);
+				}
+				return $token; // Return as text since no ending marker found.
+			default:
+				return $this->hashPart($token);
+		}
+	}
+
+	/**
+	 * Remove one level of line-leading tabs or spaces
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function outdent($text) {
+		return preg_replace('/^(\t|[ ]{1,' . $this->tab_width . '})/m', '', $text);
+	}
+
+
+	/**
+	 * String length function for detab. `_initDetab` will create a function to
+	 * handle UTF-8 if the default function does not exist.
+	 * @var string
+	 */
+	protected $utf8_strlen = 'mb_strlen';
+
+	/**
+	 * Replace tabs with the appropriate amount of spaces.
+	 *
+	 * For each line we separate the line in blocks delemited by tab characters.
+	 * Then we reconstruct every line by adding the  appropriate number of space
+	 * between each blocks.
+	 * 
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function detab($text) {	
+		$text = preg_replace_callback('/^.*\t.*$/m',
+			array($this, '_detab_callback'), $text);
+
+		return $text;
+	}
+
+	/**
+	 * Replace tabs callback
+	 * @param  string $matches
+	 * @return string
+	 */
+	protected function _detab_callback($matches) {
+		$line = $matches[0];
+		$strlen = $this->utf8_strlen; // strlen function for UTF-8.
+		
+		// Split in blocks.
+		$blocks = explode("\t", $line);
+		// Add each blocks to the line.
+		$line = $blocks[0];
+		unset($blocks[0]); // Do not add first block twice.
+		foreach ($blocks as $block) {
+			// Calculate amount of space, insert spaces, insert block.
+			$amount = $this->tab_width - 
+				$strlen($line, 'UTF-8') % $this->tab_width;
+			$line .= str_repeat(" ", $amount) . $block;
+		}
+		return $line;
+	}
+
+	/**
+	 * Check for the availability of the function in the `utf8_strlen` property
+	 * (initially `mb_strlen`). If the function is not available, create a 
+	 * function that will loosely count the number of UTF-8 characters with a
+	 * regular expression.
+	 * @return void
+	 */
+	protected function _initDetab() {
+	
+		if (function_exists($this->utf8_strlen)) {
+			return;
+		}
+
+		$this->utf8_strlen = create_function('$text', 'return preg_match_all(
+			"/[\\\\x00-\\\\xBF]|[\\\\xC0-\\\\xFF][\\\\x80-\\\\xBF]*/", 
+			$text, $m);');
+	}
+
+	/**
+	 * Swap back in all the tags hashed by _HashHTMLBlocks.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function unhash($text) {
+		return preg_replace_callback('/(.)\x1A[0-9]+\1/', 
+			array($this, '_unhash_callback'), $text);
+	}
+
+	/**
+	 * Unhashing callback
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _unhash_callback($matches) {
+		return $this->html_hashes[$matches[0]];
+	}
+}
diff --git a/vendor/michelf/php-markdown/Michelf/MarkdownExtra.inc.php b/vendor/michelf/php-markdown/Michelf/MarkdownExtra.inc.php
new file mode 100644
index 000000000..d09bd7a48
--- /dev/null
+++ b/vendor/michelf/php-markdown/Michelf/MarkdownExtra.inc.php
@@ -0,0 +1,11 @@
+<?php
+
+// Use this file if you cannot use class autoloading. It will include all the
+// files needed for the MarkdownExtra parser.
+//
+// Take a look at the PSR-0-compatible class autoloading implementation
+// in the Readme.php file if you want a simple autoloader setup.
+
+require_once dirname(__FILE__) . '/MarkdownInterface.php';
+require_once dirname(__FILE__) . '/Markdown.php';
+require_once dirname(__FILE__) . '/MarkdownExtra.php';
diff --git a/vendor/michelf/php-markdown/Michelf/MarkdownExtra.php b/vendor/michelf/php-markdown/Michelf/MarkdownExtra.php
new file mode 100644
index 000000000..ac6b1b4f2
--- /dev/null
+++ b/vendor/michelf/php-markdown/Michelf/MarkdownExtra.php
@@ -0,0 +1,1785 @@
+<?php
+/**
+ * Markdown Extra - A text-to-HTML conversion tool for web writers
+ *
+ * @package   php-markdown
+ * @author    Michel Fortin <michel.fortin@michelf.com>
+ * @copyright 2004-2016 Michel Fortin <https://michelf.com/projects/php-markdown/>
+ * @copyright (Original Markdown) 2004-2006 John Gruber <https://daringfireball.net/projects/markdown/>
+ */
+
+namespace Michelf;
+
+/**
+ * Markdown Extra Parser Class
+ */
+class MarkdownExtra extends \Michelf\Markdown {
+	/**
+	 * Configuration variables
+	 */
+
+	/**
+	 * Prefix for footnote ids.
+	 * @var string
+	 */
+	public $fn_id_prefix = "";
+	
+	/**
+	 * Optional title attribute for footnote links and backlinks.
+	 * @var string
+	 */
+	public $fn_link_title     = "";
+	public $fn_backlink_title = "";
+	
+	/**
+	 * Optional class attribute for footnote links and backlinks.
+	 * @var string
+	 */
+	public $fn_link_class     = "footnote-ref";
+	public $fn_backlink_class = "footnote-backref";
+
+	/**
+	 * Content to be displayed within footnote backlinks. The default is '↩';
+	 * the U+FE0E on the end is a Unicode variant selector used to prevent iOS
+	 * from displaying the arrow character as an emoji.
+	 * @var string
+	 */
+	public $fn_backlink_html = '&#8617;&#xFE0E;';
+
+	/**
+	 * Class name for table cell alignment (%% replaced left/center/right)
+	 * For instance: 'go-%%' becomes 'go-left' or 'go-right' or 'go-center'
+	 * If empty, the align attribute is used instead of a class name.
+	 * @var string
+	 */
+	public $table_align_class_tmpl = '';
+
+	/**
+	 * Optional class prefix for fenced code block.
+	 * @var string
+	 */
+	public $code_class_prefix = "";
+
+	/**
+	 * Class attribute for code blocks goes on the `code` tag;
+	 * setting this to true will put attributes on the `pre` tag instead.
+	 * @var boolean
+	 */
+	public $code_attr_on_pre = false;
+
+	/**
+	 * Predefined abbreviations.
+	 * @var array
+	 */
+	public $predef_abbr = array();
+
+	/**
+	 * Parser implementation
+	 */
+	
+	/**
+	 * Constructor function. Initialize the parser object.
+	 * @return void
+	 */
+	public function __construct() {
+		// Add extra escapable characters before parent constructor 
+		// initialize the table.
+		$this->escape_chars .= ':|';
+		
+		// Insert extra document, block, and span transformations. 
+		// Parent constructor will do the sorting.
+		$this->document_gamut += array(
+			"doFencedCodeBlocks" => 5,
+			"stripFootnotes"     => 15,
+			"stripAbbreviations" => 25,
+			"appendFootnotes"    => 50,
+		);
+		$this->block_gamut += array(
+			"doFencedCodeBlocks" => 5,
+			"doTables"           => 15,
+			"doDefLists"         => 45,
+		);
+		$this->span_gamut += array(
+			"doFootnotes"        => 5,
+			"doAbbreviations"    => 70,
+		);
+		
+		$this->enhanced_ordered_list = true;
+		parent::__construct();
+	}
+	
+	
+	/**
+	 * Extra variables used during extra transformations.
+	 * @var array
+	 */
+	protected $footnotes = array();
+	protected $footnotes_ordered = array();
+	protected $footnotes_ref_count = array();
+	protected $footnotes_numbers = array();
+	protected $abbr_desciptions = array();
+	/** @var @string */
+	protected $abbr_word_re = '';
+	
+	/**
+	 * Give the current footnote number.
+	 * @var integer
+	 */
+	protected $footnote_counter = 1;
+	
+	/**
+	 * Setting up Extra-specific variables.
+	 */
+	protected function setup() {
+		parent::setup();
+		
+		$this->footnotes = array();
+		$this->footnotes_ordered = array();
+		$this->footnotes_ref_count = array();
+		$this->footnotes_numbers = array();
+		$this->abbr_desciptions = array();
+		$this->abbr_word_re = '';
+		$this->footnote_counter = 1;
+		
+		foreach ($this->predef_abbr as $abbr_word => $abbr_desc) {
+			if ($this->abbr_word_re)
+				$this->abbr_word_re .= '|';
+			$this->abbr_word_re .= preg_quote($abbr_word);
+			$this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
+		}
+	}
+
+	/**
+	 * Clearing Extra-specific variables.
+	 */
+	protected function teardown() {
+		$this->footnotes = array();
+		$this->footnotes_ordered = array();
+		$this->footnotes_ref_count = array();
+		$this->footnotes_numbers = array();
+		$this->abbr_desciptions = array();
+		$this->abbr_word_re = '';
+		
+		parent::teardown();
+	}
+	
+	
+	/**
+	 * Extra attribute parser
+	 */
+
+	/**
+	 * Expression to use to catch attributes (includes the braces)
+	 * @var string
+	 */
+	protected $id_class_attr_catch_re = '\{((?>[ ]*[#.a-z][-_:a-zA-Z0-9=]+){1,})[ ]*\}';
+
+	/**
+	 * Expression to use when parsing in a context when no capture is desired
+	 * @var string
+	 */
+	protected $id_class_attr_nocatch_re = '\{(?>[ ]*[#.a-z][-_:a-zA-Z0-9=]+){1,}[ ]*\}';
+
+	/**
+	 * Parse attributes caught by the $this->id_class_attr_catch_re expression
+	 * and return the HTML-formatted list of attributes.
+	 *
+	 * Currently supported attributes are .class and #id.
+	 *
+	 * In addition, this method also supports supplying a default Id value,
+	 * which will be used to populate the id attribute in case it was not
+	 * overridden.
+	 * @param  string $tag_name
+	 * @param  string $attr
+	 * @param  mixed  $defaultIdValue
+	 * @param  array  $classes
+	 * @return string
+	 */
+	protected function doExtraAttributes($tag_name, $attr, $defaultIdValue = null, $classes = array()) {
+		if (empty($attr) && !$defaultIdValue && empty($classes)) return "";
+		
+		// Split on components
+		preg_match_all('/[#.a-z][-_:a-zA-Z0-9=]+/', $attr, $matches);
+		$elements = $matches[0];
+
+		// Handle classes and IDs (only first ID taken into account)
+		$attributes = array();
+		$id = false;
+		foreach ($elements as $element) {
+			if ($element{0} == '.') {
+				$classes[] = substr($element, 1);
+			} else if ($element{0} == '#') {
+				if ($id === false) $id = substr($element, 1);
+			} else if (strpos($element, '=') > 0) {
+				$parts = explode('=', $element, 2);
+				$attributes[] = $parts[0] . '="' . $parts[1] . '"';
+			}
+		}
+
+		if (!$id) $id = $defaultIdValue;
+
+		// Compose attributes as string
+		$attr_str = "";
+		if (!empty($id)) {
+			$attr_str .= ' id="'.$this->encodeAttribute($id) .'"';
+		}
+		if (!empty($classes)) {
+			$attr_str .= ' class="'. implode(" ", $classes) . '"';
+		}
+		if (!$this->no_markup && !empty($attributes)) {
+			$attr_str .= ' '.implode(" ", $attributes);
+		}
+		return $attr_str;
+	}
+
+	/**
+	 * Strips link definitions from text, stores the URLs and titles in
+	 * hash references.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function stripLinkDefinitions($text) {
+		$less_than_tab = $this->tab_width - 1;
+
+		// Link defs are in the form: ^[id]: url "optional title"
+		$text = preg_replace_callback('{
+							^[ ]{0,'.$less_than_tab.'}\[(.+)\][ ]?:	# id = $1
+							  [ ]*
+							  \n?				# maybe *one* newline
+							  [ ]*
+							(?:
+							  <(.+?)>			# url = $2
+							|
+							  (\S+?)			# url = $3
+							)
+							  [ ]*
+							  \n?				# maybe one newline
+							  [ ]*
+							(?:
+								(?<=\s)			# lookbehind for whitespace
+								["(]
+								(.*?)			# title = $4
+								[")]
+								[ ]*
+							)?	# title is optional
+					(?:[ ]* '.$this->id_class_attr_catch_re.' )?  # $5 = extra id & class attr
+							(?:\n+|\Z)
+			}xm',
+			array($this, '_stripLinkDefinitions_callback'),
+			$text);
+		return $text;
+	}
+
+	/**
+	 * Strip link definition callback
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _stripLinkDefinitions_callback($matches) {
+		$link_id = strtolower($matches[1]);
+		$url = $matches[2] == '' ? $matches[3] : $matches[2];
+		$this->urls[$link_id] = $url;
+		$this->titles[$link_id] =& $matches[4];
+		$this->ref_attr[$link_id] = $this->doExtraAttributes("", $dummy =& $matches[5]);
+		return ''; // String that will replace the block
+	}
+
+
+	/**
+	 * HTML block parser
+	 */
+	
+	/**
+	 * Tags that are always treated as block tags
+	 * @var string
+	 */
+	protected $block_tags_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|form|fieldset|iframe|hr|legend|article|section|nav|aside|hgroup|header|footer|figcaption|figure';
+						   
+	/**
+	 * Tags treated as block tags only if the opening tag is alone on its line
+	 * @var string
+	 */
+	protected $context_block_tags_re = 'script|noscript|style|ins|del|iframe|object|source|track|param|math|svg|canvas|audio|video';
+	
+	/**
+	 * Tags where markdown="1" default to span mode:
+	 * @var string
+	 */
+	protected $contain_span_tags_re = 'p|h[1-6]|li|dd|dt|td|th|legend|address';
+	
+	/**
+	 * Tags which must not have their contents modified, no matter where
+	 * they appear
+	 * @var string
+	 */
+	protected $clean_tags_re = 'script|style|math|svg';
+	
+	/**
+	 * Tags that do not need to be closed.
+	 * @var string
+	 */
+	protected $auto_close_tags_re = 'hr|img|param|source|track';
+	
+	/**
+	 * Hashify HTML Blocks and "clean tags".
+	 *
+	 * We only want to do this for block-level HTML tags, such as headers,
+	 * lists, and tables. That's because we still want to wrap <p>s around
+	 * "paragraphs" that are wrapped in non-block-level tags, such as anchors,
+	 * phrase emphasis, and spans. The list of tags we're looking for is
+	 * hard-coded.
+	 *
+	 * This works by calling _HashHTMLBlocks_InMarkdown, which then calls
+	 * _HashHTMLBlocks_InHTML when it encounter block tags. When the markdown="1" 
+	 * attribute is found within a tag, _HashHTMLBlocks_InHTML calls back
+	 *  _HashHTMLBlocks_InMarkdown to handle the Markdown syntax within the tag.
+	 * These two functions are calling each other. It's recursive!
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function hashHTMLBlocks($text) {
+		if ($this->no_markup) {
+			return $text;
+		}
+
+		// Call the HTML-in-Markdown hasher.
+		list($text, ) = $this->_hashHTMLBlocks_inMarkdown($text);
+		
+		return $text;
+	}
+
+	/**
+	 * Parse markdown text, calling _HashHTMLBlocks_InHTML for block tags.
+	 *
+	 * *   $indent is the number of space to be ignored when checking for code 
+	 *     blocks. This is important because if we don't take the indent into 
+	 *     account, something like this (which looks right) won't work as expected:
+	 *
+	 *     <div>
+	 *         <div markdown="1">
+	 *         Hello World.  <-- Is this a Markdown code block or text?
+	 *         </div>  <-- Is this a Markdown code block or a real tag?
+	 *     <div>
+	 *
+	 *     If you don't like this, just don't indent the tag on which
+	 *     you apply the markdown="1" attribute.
+	 *
+	 * *   If $enclosing_tag_re is not empty, stops at the first unmatched closing 
+	 *     tag with that name. Nested tags supported.
+	 *
+	 * *   If $span is true, text inside must treated as span. So any double 
+	 *     newline will be replaced by a single newline so that it does not create 
+	 *     paragraphs.
+	 *
+	 * Returns an array of that form: ( processed text , remaining text )
+	 *
+	 * @param  string  $text
+	 * @param  integer $indent
+	 * @param  string  $enclosing_tag_re
+	 * @param  boolean $span
+	 * @return array
+	 */
+	protected function _hashHTMLBlocks_inMarkdown($text, $indent = 0,
+										$enclosing_tag_re = '', $span = false)
+	{
+	
+		if ($text === '') return array('', '');
+
+		// Regex to check for the presense of newlines around a block tag.
+		$newline_before_re = '/(?:^\n?|\n\n)*$/';
+		$newline_after_re = 
+			'{
+				^						# Start of text following the tag.
+				(?>[ ]*<!--.*?-->)?		# Optional comment.
+				[ ]*\n					# Must be followed by newline.
+			}xs';
+		
+		// Regex to match any tag.
+		$block_tag_re =
+			'{
+				(					# $2: Capture whole tag.
+					</?					# Any opening or closing tag.
+						(?>				# Tag name.
+							' . $this->block_tags_re . '			|
+							' . $this->context_block_tags_re . '	|
+							' . $this->clean_tags_re . '        	|
+							(?!\s)'.$enclosing_tag_re . '
+						)
+						(?:
+							(?=[\s"\'/a-zA-Z0-9])	# Allowed characters after tag name.
+							(?>
+								".*?"		|	# Double quotes (can contain `>`)
+								\'.*?\'   	|	# Single quotes (can contain `>`)
+								.+?				# Anything but quotes and `>`.
+							)*?
+						)?
+					>					# End of tag.
+				|
+					<!--    .*?     -->	# HTML Comment
+				|
+					<\?.*?\?> | <%.*?%>	# Processing instruction
+				|
+					<!\[CDATA\[.*?\]\]>	# CData Block
+				' . ( !$span ? ' # If not in span.
+				|
+					# Indented code block
+					(?: ^[ ]*\n | ^ | \n[ ]*\n )
+					[ ]{' . ($indent + 4) . '}[^\n]* \n
+					(?>
+						(?: [ ]{' . ($indent + 4) . '}[^\n]* | [ ]* ) \n
+					)*
+				|
+					# Fenced code block marker
+					(?<= ^ | \n )
+					[ ]{0,' . ($indent + 3) . '}(?:~{3,}|`{3,})
+					[ ]*
+					(?: \.?[-_:a-zA-Z0-9]+ )? # standalone class name
+					[ ]*
+					(?: ' . $this->id_class_attr_nocatch_re . ' )? # extra attributes
+					[ ]*
+					(?= \n )
+				' : '' ) . ' # End (if not is span).
+				|
+					# Code span marker
+					# Note, this regex needs to go after backtick fenced
+					# code blocks but it should also be kept outside of the
+					# "if not in span" condition adding backticks to the parser
+					`+
+				)
+			}xs';
+
+		
+		$depth = 0;		// Current depth inside the tag tree.
+		$parsed = "";	// Parsed text that will be returned.
+
+		// Loop through every tag until we find the closing tag of the parent
+		// or loop until reaching the end of text if no parent tag specified.
+		do {
+			// Split the text using the first $tag_match pattern found.
+			// Text before  pattern will be first in the array, text after
+			// pattern will be at the end, and between will be any catches made 
+			// by the pattern.
+			$parts = preg_split($block_tag_re, $text, 2, 
+								PREG_SPLIT_DELIM_CAPTURE);
+			
+			// If in Markdown span mode, add a empty-string span-level hash 
+			// after each newline to prevent triggering any block element.
+			if ($span) {
+				$void = $this->hashPart("", ':');
+				$newline = "\n$void";
+				$parts[0] = $void . str_replace("\n", $newline, $parts[0]) . $void;
+			}
+			
+			$parsed .= $parts[0]; // Text before current tag.
+			
+			// If end of $text has been reached. Stop loop.
+			if (count($parts) < 3) {
+				$text = "";
+				break;
+			}
+			
+			$tag  = $parts[1]; // Tag to handle.
+			$text = $parts[2]; // Remaining text after current tag.
+			$tag_re = preg_quote($tag); // For use in a regular expression.
+			
+			// Check for: Fenced code block marker.
+			// Note: need to recheck the whole tag to disambiguate backtick
+			// fences from code spans
+			if (preg_match('{^\n?([ ]{0,' . ($indent + 3) . '})(~{3,}|`{3,})[ ]*(?:\.?[-_:a-zA-Z0-9]+)?[ ]*(?:' . $this->id_class_attr_nocatch_re . ')?[ ]*\n?$}', $tag, $capture)) {
+				// Fenced code block marker: find matching end marker.
+				$fence_indent = strlen($capture[1]); // use captured indent in re
+				$fence_re = $capture[2]; // use captured fence in re
+				if (preg_match('{^(?>.*\n)*?[ ]{' . ($fence_indent) . '}' . $fence_re . '[ ]*(?:\n|$)}', $text,
+					$matches)) 
+				{
+					// End marker found: pass text unchanged until marker.
+					$parsed .= $tag . $matches[0];
+					$text = substr($text, strlen($matches[0]));
+				}
+				else {
+					// No end marker: just skip it.
+					$parsed .= $tag;
+				}
+			}
+			// Check for: Indented code block.
+			else if ($tag{0} == "\n" || $tag{0} == " ") {
+				// Indented code block: pass it unchanged, will be handled 
+				// later.
+				$parsed .= $tag;
+			}
+			// Check for: Code span marker
+			// Note: need to check this after backtick fenced code blocks
+			else if ($tag{0} == "`") {
+				// Find corresponding end marker.
+				$tag_re = preg_quote($tag);
+				if (preg_match('{^(?>.+?|\n(?!\n))*?(?<!`)' . $tag_re . '(?!`)}',
+					$text, $matches))
+				{
+					// End marker found: pass text unchanged until marker.
+					$parsed .= $tag . $matches[0];
+					$text = substr($text, strlen($matches[0]));
+				}
+				else {
+					// Unmatched marker: just skip it.
+					$parsed .= $tag;
+				}
+			}
+			// Check for: Opening Block level tag or
+			//            Opening Context Block tag (like ins and del) 
+			//               used as a block tag (tag is alone on it's line).
+			else if (preg_match('{^<(?:' . $this->block_tags_re . ')\b}', $tag) ||
+				(	preg_match('{^<(?:' . $this->context_block_tags_re . ')\b}', $tag) &&
+					preg_match($newline_before_re, $parsed) &&
+					preg_match($newline_after_re, $text)	)
+				)
+			{
+				// Need to parse tag and following text using the HTML parser.
+				list($block_text, $text) = 
+					$this->_hashHTMLBlocks_inHTML($tag . $text, "hashBlock", true);
+				
+				// Make sure it stays outside of any paragraph by adding newlines.
+				$parsed .= "\n\n$block_text\n\n";
+			}
+			// Check for: Clean tag (like script, math)
+			//            HTML Comments, processing instructions.
+			else if (preg_match('{^<(?:' . $this->clean_tags_re . ')\b}', $tag) ||
+				$tag{1} == '!' || $tag{1} == '?')
+			{
+				// Need to parse tag and following text using the HTML parser.
+				// (don't check for markdown attribute)
+				list($block_text, $text) = 
+					$this->_hashHTMLBlocks_inHTML($tag . $text, "hashClean", false);
+				
+				$parsed .= $block_text;
+			}
+			// Check for: Tag with same name as enclosing tag.
+			else if ($enclosing_tag_re !== '' &&
+				// Same name as enclosing tag.
+				preg_match('{^</?(?:' . $enclosing_tag_re . ')\b}', $tag))
+			{
+				// Increase/decrease nested tag count.
+				if ($tag{1} == '/')						$depth--;
+				else if ($tag{strlen($tag)-2} != '/')	$depth++;
+
+				if ($depth < 0) {
+					// Going out of parent element. Clean up and break so we
+					// return to the calling function.
+					$text = $tag . $text;
+					break;
+				}
+				
+				$parsed .= $tag;
+			}
+			else {
+				$parsed .= $tag;
+			}
+		} while ($depth >= 0);
+		
+		return array($parsed, $text);
+	}
+
+	/**
+	 * Parse HTML, calling _HashHTMLBlocks_InMarkdown for block tags.
+	 *
+	 * *   Calls $hash_method to convert any blocks.
+	 * *   Stops when the first opening tag closes.
+	 * *   $md_attr indicate if the use of the `markdown="1"` attribute is allowed.
+	 *     (it is not inside clean tags)
+	 *
+	 * Returns an array of that form: ( processed text , remaining text )
+	 * @param  string $text
+	 * @param  string $hash_method
+	 * @param  string $md_attr
+	 * @return array
+	 */
+	protected function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) {
+		if ($text === '') return array('', '');
+		
+		// Regex to match `markdown` attribute inside of a tag.
+		$markdown_attr_re = '
+			{
+				\s*			# Eat whitespace before the `markdown` attribute
+				markdown
+				\s*=\s*
+				(?>
+					(["\'])		# $1: quote delimiter		
+					(.*?)		# $2: attribute value
+					\1			# matching delimiter	
+				|
+					([^\s>]*)	# $3: unquoted attribute value
+				)
+				()				# $4: make $3 always defined (avoid warnings)
+			}xs';
+		
+		// Regex to match any tag.
+		$tag_re = '{
+				(					# $2: Capture whole tag.
+					</?					# Any opening or closing tag.
+						[\w:$]+			# Tag name.
+						(?:
+							(?=[\s"\'/a-zA-Z0-9])	# Allowed characters after tag name.
+							(?>
+								".*?"		|	# Double quotes (can contain `>`)
+								\'.*?\'   	|	# Single quotes (can contain `>`)
+								.+?				# Anything but quotes and `>`.
+							)*?
+						)?
+					>					# End of tag.
+				|
+					<!--    .*?     -->	# HTML Comment
+				|
+					<\?.*?\?> | <%.*?%>	# Processing instruction
+				|
+					<!\[CDATA\[.*?\]\]>	# CData Block
+				)
+			}xs';
+		
+		$original_text = $text;		// Save original text in case of faliure.
+		
+		$depth		= 0;	// Current depth inside the tag tree.
+		$block_text	= "";	// Temporary text holder for current text.
+		$parsed		= "";	// Parsed text that will be returned.
+
+		// Get the name of the starting tag.
+		// (This pattern makes $base_tag_name_re safe without quoting.)
+		if (preg_match('/^<([\w:$]*)\b/', $text, $matches))
+			$base_tag_name_re = $matches[1];
+
+		// Loop through every tag until we find the corresponding closing tag.
+		do {
+			// Split the text using the first $tag_match pattern found.
+			// Text before  pattern will be first in the array, text after
+			// pattern will be at the end, and between will be any catches made 
+			// by the pattern.
+			$parts = preg_split($tag_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
+			
+			if (count($parts) < 3) {
+				// End of $text reached with unbalenced tag(s).
+				// In that case, we return original text unchanged and pass the
+				// first character as filtered to prevent an infinite loop in the 
+				// parent function.
+				return array($original_text{0}, substr($original_text, 1));
+			}
+			
+			$block_text .= $parts[0]; // Text before current tag.
+			$tag         = $parts[1]; // Tag to handle.
+			$text        = $parts[2]; // Remaining text after current tag.
+			
+			// Check for: Auto-close tag (like <hr/>)
+			//			 Comments and Processing Instructions.
+			if (preg_match('{^</?(?:' . $this->auto_close_tags_re . ')\b}', $tag) ||
+				$tag{1} == '!' || $tag{1} == '?')
+			{
+				// Just add the tag to the block as if it was text.
+				$block_text .= $tag;
+			}
+			else {
+				// Increase/decrease nested tag count. Only do so if
+				// the tag's name match base tag's.
+				if (preg_match('{^</?' . $base_tag_name_re . '\b}', $tag)) {
+					if ($tag{1} == '/')						$depth--;
+					else if ($tag{strlen($tag)-2} != '/')	$depth++;
+				}
+				
+				// Check for `markdown="1"` attribute and handle it.
+				if ($md_attr && 
+					preg_match($markdown_attr_re, $tag, $attr_m) &&
+					preg_match('/^1|block|span$/', $attr_m[2] . $attr_m[3]))
+				{
+					// Remove `markdown` attribute from opening tag.
+					$tag = preg_replace($markdown_attr_re, '', $tag);
+					
+					// Check if text inside this tag must be parsed in span mode.
+					$this->mode = $attr_m[2] . $attr_m[3];
+					$span_mode = $this->mode == 'span' || $this->mode != 'block' &&
+						preg_match('{^<(?:' . $this->contain_span_tags_re . ')\b}', $tag);
+					
+					// Calculate indent before tag.
+					if (preg_match('/(?:^|\n)( *?)(?! ).*?$/', $block_text, $matches)) {
+						$strlen = $this->utf8_strlen;
+						$indent = $strlen($matches[1], 'UTF-8');
+					} else {
+						$indent = 0;
+					}
+					
+					// End preceding block with this tag.
+					$block_text .= $tag;
+					$parsed .= $this->$hash_method($block_text);
+					
+					// Get enclosing tag name for the ParseMarkdown function.
+					// (This pattern makes $tag_name_re safe without quoting.)
+					preg_match('/^<([\w:$]*)\b/', $tag, $matches);
+					$tag_name_re = $matches[1];
+					
+					// Parse the content using the HTML-in-Markdown parser.
+					list ($block_text, $text)
+						= $this->_hashHTMLBlocks_inMarkdown($text, $indent, 
+							$tag_name_re, $span_mode);
+					
+					// Outdent markdown text.
+					if ($indent > 0) {
+						$block_text = preg_replace("/^[ ]{1,$indent}/m", "", 
+													$block_text);
+					}
+					
+					// Append tag content to parsed text.
+					if (!$span_mode)	$parsed .= "\n\n$block_text\n\n";
+					else				$parsed .= "$block_text";
+					
+					// Start over with a new block.
+					$block_text = "";
+				}
+				else $block_text .= $tag;
+			}
+			
+		} while ($depth > 0);
+		
+		// Hash last block text that wasn't processed inside the loop.
+		$parsed .= $this->$hash_method($block_text);
+		
+		return array($parsed, $text);
+	}
+
+	/**
+	 * Called whenever a tag must be hashed when a function inserts a "clean" tag
+	 * in $text, it passes through this function and is automaticaly escaped, 
+	 * blocking invalid nested overlap.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function hashClean($text) {
+		return $this->hashPart($text, 'C');
+	}
+
+	/**
+	 * Turn Markdown link shortcuts into XHTML <a> tags.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doAnchors($text) {
+		if ($this->in_anchor) {
+			return $text;
+		}
+		$this->in_anchor = true;
+
+		// First, handle reference-style links: [link text] [id]
+		$text = preg_replace_callback('{
+			(					# wrap whole match in $1
+			  \[
+				(' . $this->nested_brackets_re . ')	# link text = $2
+			  \]
+
+			  [ ]?				# one optional space
+			  (?:\n[ ]*)?		# one optional newline followed by spaces
+
+			  \[
+				(.*?)		# id = $3
+			  \]
+			)
+			}xs',
+			array($this, '_doAnchors_reference_callback'), $text);
+
+		// Next, inline-style links: [link text](url "optional title")
+		$text = preg_replace_callback('{
+			(				# wrap whole match in $1
+			  \[
+				(' . $this->nested_brackets_re . ')	# link text = $2
+			  \]
+			  \(			# literal paren
+				[ \n]*
+				(?:
+					<(.+?)>	# href = $3
+				|
+					(' . $this->nested_url_parenthesis_re . ')	# href = $4
+				)
+				[ \n]*
+				(			# $5
+				  ([\'"])	# quote char = $6
+				  (.*?)		# Title = $7
+				  \6		# matching quote
+				  [ \n]*	# ignore any spaces/tabs between closing quote and )
+				)?			# title is optional
+			  \)
+			  (?:[ ]? ' . $this->id_class_attr_catch_re . ' )?	 # $8 = id/class attributes
+			)
+			}xs',
+			array($this, '_doAnchors_inline_callback'), $text);
+
+		// Last, handle reference-style shortcuts: [link text]
+		// These must come last in case you've also got [link text][1]
+		// or [link text](/foo)
+		$text = preg_replace_callback('{
+			(					# wrap whole match in $1
+			  \[
+				([^\[\]]+)		# link text = $2; can\'t contain [ or ]
+			  \]
+			)
+			}xs',
+			array($this, '_doAnchors_reference_callback'), $text);
+
+		$this->in_anchor = false;
+		return $text;
+	}
+
+	/**
+	 * Callback for reference anchors
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doAnchors_reference_callback($matches) {
+		$whole_match =  $matches[1];
+		$link_text   =  $matches[2];
+		$link_id     =& $matches[3];
+
+		if ($link_id == "") {
+			// for shortcut links like [this][] or [this].
+			$link_id = $link_text;
+		}
+		
+		// lower-case and turn embedded newlines into spaces
+		$link_id = strtolower($link_id);
+		$link_id = preg_replace('{[ ]?\n}', ' ', $link_id);
+
+		if (isset($this->urls[$link_id])) {
+			$url = $this->urls[$link_id];
+			$url = $this->encodeURLAttribute($url);
+			
+			$result = "<a href=\"$url\"";
+			if ( isset( $this->titles[$link_id] ) ) {
+				$title = $this->titles[$link_id];
+				$title = $this->encodeAttribute($title);
+				$result .=  " title=\"$title\"";
+			}
+			if (isset($this->ref_attr[$link_id]))
+				$result .= $this->ref_attr[$link_id];
+		
+			$link_text = $this->runSpanGamut($link_text);
+			$result .= ">$link_text</a>";
+			$result = $this->hashPart($result);
+		}
+		else {
+			$result = $whole_match;
+		}
+		return $result;
+	}
+
+	/**
+	 * Callback for inline anchors
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doAnchors_inline_callback($matches) {
+		$whole_match	=  $matches[1];
+		$link_text		=  $this->runSpanGamut($matches[2]);
+		$url			=  $matches[3] == '' ? $matches[4] : $matches[3];
+		$title			=& $matches[7];
+		$attr  = $this->doExtraAttributes("a", $dummy =& $matches[8]);
+
+		// if the URL was of the form <s p a c e s> it got caught by the HTML
+		// tag parser and hashed. Need to reverse the process before using the URL.
+		$unhashed = $this->unhash($url);
+		if ($unhashed != $url)
+			$url = preg_replace('/^<(.*)>$/', '\1', $unhashed);
+
+		$url = $this->encodeURLAttribute($url);
+
+		$result = "<a href=\"$url\"";
+		if (isset($title)) {
+			$title = $this->encodeAttribute($title);
+			$result .=  " title=\"$title\"";
+		}
+		$result .= $attr;
+		
+		$link_text = $this->runSpanGamut($link_text);
+		$result .= ">$link_text</a>";
+
+		return $this->hashPart($result);
+	}
+
+	/**
+	 * Turn Markdown image shortcuts into <img> tags.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doImages($text) {
+		// First, handle reference-style labeled images: ![alt text][id]
+		$text = preg_replace_callback('{
+			(				# wrap whole match in $1
+			  !\[
+				(' . $this->nested_brackets_re . ')		# alt text = $2
+			  \]
+
+			  [ ]?				# one optional space
+			  (?:\n[ ]*)?		# one optional newline followed by spaces
+
+			  \[
+				(.*?)		# id = $3
+			  \]
+
+			)
+			}xs', 
+			array($this, '_doImages_reference_callback'), $text);
+
+		// Next, handle inline images:  ![alt text](url "optional title")
+		// Don't forget: encode * and _
+		$text = preg_replace_callback('{
+			(				# wrap whole match in $1
+			  !\[
+				(' . $this->nested_brackets_re . ')		# alt text = $2
+			  \]
+			  \s?			# One optional whitespace character
+			  \(			# literal paren
+				[ \n]*
+				(?:
+					<(\S*)>	# src url = $3
+				|
+					(' . $this->nested_url_parenthesis_re . ')	# src url = $4
+				)
+				[ \n]*
+				(			# $5
+				  ([\'"])	# quote char = $6
+				  (.*?)		# title = $7
+				  \6		# matching quote
+				  [ \n]*
+				)?			# title is optional
+			  \)
+			  (?:[ ]? ' . $this->id_class_attr_catch_re . ' )?	 # $8 = id/class attributes
+			)
+			}xs',
+			array($this, '_doImages_inline_callback'), $text);
+
+		return $text;
+	}
+
+	/**
+	 * Callback for referenced images
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doImages_reference_callback($matches) {
+		$whole_match = $matches[1];
+		$alt_text    = $matches[2];
+		$link_id     = strtolower($matches[3]);
+
+		if ($link_id == "") {
+			$link_id = strtolower($alt_text); // for shortcut links like ![this][].
+		}
+
+		$alt_text = $this->encodeAttribute($alt_text);
+		if (isset($this->urls[$link_id])) {
+			$url = $this->encodeURLAttribute($this->urls[$link_id]);
+			$result = "<img src=\"$url\" alt=\"$alt_text\"";
+			if (isset($this->titles[$link_id])) {
+				$title = $this->titles[$link_id];
+				$title = $this->encodeAttribute($title);
+				$result .=  " title=\"$title\"";
+			}
+			if (isset($this->ref_attr[$link_id]))
+				$result .= $this->ref_attr[$link_id];
+			$result .= $this->empty_element_suffix;
+			$result = $this->hashPart($result);
+		}
+		else {
+			// If there's no such link ID, leave intact:
+			$result = $whole_match;
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Callback for inline images
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doImages_inline_callback($matches) {
+		$whole_match	= $matches[1];
+		$alt_text		= $matches[2];
+		$url			= $matches[3] == '' ? $matches[4] : $matches[3];
+		$title			=& $matches[7];
+		$attr  = $this->doExtraAttributes("img", $dummy =& $matches[8]);
+
+		$alt_text = $this->encodeAttribute($alt_text);
+		$url = $this->encodeURLAttribute($url);
+		$result = "<img src=\"$url\" alt=\"$alt_text\"";
+		if (isset($title)) {
+			$title = $this->encodeAttribute($title);
+			$result .=  " title=\"$title\""; // $title already quoted
+		}
+		$result .= $attr;
+		$result .= $this->empty_element_suffix;
+
+		return $this->hashPart($result);
+	}
+
+	/**
+	 * Process markdown headers. Redefined to add ID and class attribute support.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doHeaders($text) {
+		// Setext-style headers:
+		//  Header 1  {#header1}
+		//	  ========
+		//  
+		//	  Header 2  {#header2 .class1 .class2}
+		//	  --------
+		//
+		$text = preg_replace_callback(
+			'{
+				(^.+?)								# $1: Header text
+				(?:[ ]+ ' . $this->id_class_attr_catch_re . ' )?	 # $3 = id/class attributes
+				[ ]*\n(=+|-+)[ ]*\n+				# $3: Header footer
+			}mx',
+			array($this, '_doHeaders_callback_setext'), $text);
+
+		// atx-style headers:
+		//	# Header 1        {#header1}
+		//	## Header 2       {#header2}
+		//	## Header 2 with closing hashes ##  {#header3.class1.class2}
+		//	...
+		//	###### Header 6   {.class2}
+		//
+		$text = preg_replace_callback('{
+				^(\#{1,6})	# $1 = string of #\'s
+				[ ]*
+				(.+?)		# $2 = Header text
+				[ ]*
+				\#*			# optional closing #\'s (not counted)
+				(?:[ ]+ ' . $this->id_class_attr_catch_re . ' )?	 # $3 = id/class attributes
+				[ ]*
+				\n+
+			}xm',
+			array($this, '_doHeaders_callback_atx'), $text);
+
+		return $text;
+	}
+
+	/**
+	 * Callback for setext headers
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doHeaders_callback_setext($matches) {
+		if ($matches[3] == '-' && preg_match('{^- }', $matches[1])) {
+			return $matches[0];
+		}
+
+		$level = $matches[3]{0} == '=' ? 1 : 2;
+
+		$defaultId = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[1]) : null;
+
+		$attr  = $this->doExtraAttributes("h$level", $dummy =& $matches[2], $defaultId);
+		$block = "<h$level$attr>" . $this->runSpanGamut($matches[1]) . "</h$level>";
+		return "\n" . $this->hashBlock($block) . "\n\n";
+	}
+
+	/**
+	 * Callback for atx headers
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doHeaders_callback_atx($matches) {
+		$level = strlen($matches[1]);
+
+		$defaultId = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[2]) : null;
+		$attr  = $this->doExtraAttributes("h$level", $dummy =& $matches[3], $defaultId);
+		$block = "<h$level$attr>" . $this->runSpanGamut($matches[2]) . "</h$level>";
+		return "\n" . $this->hashBlock($block) . "\n\n";
+	}
+
+	/**
+	 * Form HTML tables.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doTables($text) {
+		$less_than_tab = $this->tab_width - 1;
+		// Find tables with leading pipe.
+		//
+		//	| Header 1 | Header 2
+		//	| -------- | --------
+		//	| Cell 1   | Cell 2
+		//	| Cell 3   | Cell 4
+		$text = preg_replace_callback('
+			{
+				^							# Start of a line
+				[ ]{0,' . $less_than_tab . '}	# Allowed whitespace.
+				[|]							# Optional leading pipe (present)
+				(.+) \n						# $1: Header row (at least one pipe)
+				
+				[ ]{0,' . $less_than_tab . '}	# Allowed whitespace.
+				[|] ([ ]*[-:]+[-| :]*) \n	# $2: Header underline
+				
+				(							# $3: Cells
+					(?>
+						[ ]*				# Allowed whitespace.
+						[|] .* \n			# Row content.
+					)*
+				)
+				(?=\n|\Z)					# Stop at final double newline.
+			}xm',
+			array($this, '_doTable_leadingPipe_callback'), $text);
+
+		// Find tables without leading pipe.
+		//
+		//	Header 1 | Header 2
+		//	-------- | --------
+		//	Cell 1   | Cell 2
+		//	Cell 3   | Cell 4
+		$text = preg_replace_callback('
+			{
+				^							# Start of a line
+				[ ]{0,' . $less_than_tab . '}	# Allowed whitespace.
+				(\S.*[|].*) \n				# $1: Header row (at least one pipe)
+				
+				[ ]{0,' . $less_than_tab . '}	# Allowed whitespace.
+				([-:]+[ ]*[|][-| :]*) \n	# $2: Header underline
+				
+				(							# $3: Cells
+					(?>
+						.* [|] .* \n		# Row content
+					)*
+				)
+				(?=\n|\Z)					# Stop at final double newline.
+			}xm',
+			array($this, '_DoTable_callback'), $text);
+
+		return $text;
+	}
+
+	/**
+	 * Callback for removing the leading pipe for each row
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doTable_leadingPipe_callback($matches) {
+		$head		= $matches[1];
+		$underline	= $matches[2];
+		$content	= $matches[3];
+
+		$content	= preg_replace('/^ *[|]/m', '', $content);
+		
+		return $this->_doTable_callback(array($matches[0], $head, $underline, $content));
+	}
+
+	/**
+	 * Make the align attribute in a table
+	 * @param  string $alignname
+	 * @return string
+	 */
+	protected function _doTable_makeAlignAttr($alignname)
+	{
+		if (empty($this->table_align_class_tmpl)) {
+			return " align=\"$alignname\"";
+		}
+
+		$classname = str_replace('%%', $alignname, $this->table_align_class_tmpl);
+		return " class=\"$classname\"";
+	}
+
+	/**
+	 * Calback for processing tables
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doTable_callback($matches) {
+		$head		= $matches[1];
+		$underline	= $matches[2];
+		$content	= $matches[3];
+
+		// Remove any tailing pipes for each line.
+		$head		= preg_replace('/[|] *$/m', '', $head);
+		$underline	= preg_replace('/[|] *$/m', '', $underline);
+		$content	= preg_replace('/[|] *$/m', '', $content);
+		
+		// Reading alignement from header underline.
+		$separators	= preg_split('/ *[|] */', $underline);
+		foreach ($separators as $n => $s) {
+			if (preg_match('/^ *-+: *$/', $s))
+				$attr[$n] = $this->_doTable_makeAlignAttr('right');
+			else if (preg_match('/^ *:-+: *$/', $s))
+				$attr[$n] = $this->_doTable_makeAlignAttr('center');
+			else if (preg_match('/^ *:-+ *$/', $s))
+				$attr[$n] = $this->_doTable_makeAlignAttr('left');
+			else
+				$attr[$n] = '';
+		}
+		
+		// Parsing span elements, including code spans, character escapes, 
+		// and inline HTML tags, so that pipes inside those gets ignored.
+		$head		= $this->parseSpan($head);
+		$headers	= preg_split('/ *[|] */', $head);
+		$col_count	= count($headers);
+		$attr       = array_pad($attr, $col_count, '');
+		
+		// Write column headers.
+		$text = "<table>\n";
+		$text .= "<thead>\n";
+		$text .= "<tr>\n";
+		foreach ($headers as $n => $header)
+			$text .= "  <th$attr[$n]>" . $this->runSpanGamut(trim($header)) . "</th>\n";
+		$text .= "</tr>\n";
+		$text .= "</thead>\n";
+		
+		// Split content by row.
+		$rows = explode("\n", trim($content, "\n"));
+		
+		$text .= "<tbody>\n";
+		foreach ($rows as $row) {
+			// Parsing span elements, including code spans, character escapes, 
+			// and inline HTML tags, so that pipes inside those gets ignored.
+			$row = $this->parseSpan($row);
+			
+			// Split row by cell.
+			$row_cells = preg_split('/ *[|] */', $row, $col_count);
+			$row_cells = array_pad($row_cells, $col_count, '');
+			
+			$text .= "<tr>\n";
+			foreach ($row_cells as $n => $cell)
+				$text .= "  <td$attr[$n]>" . $this->runSpanGamut(trim($cell)) . "</td>\n";
+			$text .= "</tr>\n";
+		}
+		$text .= "</tbody>\n";
+		$text .= "</table>";
+		
+		return $this->hashBlock($text) . "\n";
+	}
+
+	/**
+	 * Form HTML definition lists.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doDefLists($text) {
+		$less_than_tab = $this->tab_width - 1;
+
+		// Re-usable pattern to match any entire dl list:
+		$whole_list_re = '(?>
+			(								# $1 = whole list
+			  (								# $2
+				[ ]{0,' . $less_than_tab . '}
+				((?>.*\S.*\n)+)				# $3 = defined term
+				\n?
+				[ ]{0,' . $less_than_tab . '}:[ ]+ # colon starting definition
+			  )
+			  (?s:.+?)
+			  (								# $4
+				  \z
+				|
+				  \n{2,}
+				  (?=\S)
+				  (?!						# Negative lookahead for another term
+					[ ]{0,' . $less_than_tab . '}
+					(?: \S.*\n )+?			# defined term
+					\n?
+					[ ]{0,' . $less_than_tab . '}:[ ]+ # colon starting definition
+				  )
+				  (?!						# Negative lookahead for another definition
+					[ ]{0,' . $less_than_tab . '}:[ ]+ # colon starting definition
+				  )
+			  )
+			)
+		)'; // mx
+
+		$text = preg_replace_callback('{
+				(?>\A\n?|(?<=\n\n))
+				' . $whole_list_re . '
+			}mx',
+			array($this, '_doDefLists_callback'), $text);
+
+		return $text;
+	}
+
+	/**
+	 * Callback for processing definition lists
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doDefLists_callback($matches) {
+		// Re-usable patterns to match list item bullets and number markers:
+		$list = $matches[1];
+		
+		// Turn double returns into triple returns, so that we can make a
+		// paragraph for the last item in a list, if necessary:
+		$result = trim($this->processDefListItems($list));
+		$result = "<dl>\n" . $result . "\n</dl>";
+		return $this->hashBlock($result) . "\n\n";
+	}
+
+	/**
+	 * Process the contents of a single definition list, splitting it
+	 * into individual term and definition list items.
+	 * @param  string $list_str
+	 * @return string
+	 */
+	protected function processDefListItems($list_str) {
+	
+		$less_than_tab = $this->tab_width - 1;
+		
+		// Trim trailing blank lines:
+		$list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
+
+		// Process definition terms.
+		$list_str = preg_replace_callback('{
+			(?>\A\n?|\n\n+)						# leading line
+			(									# definition terms = $1
+				[ ]{0,' . $less_than_tab . '}	# leading whitespace
+				(?!\:[ ]|[ ])					# negative lookahead for a definition
+												#   mark (colon) or more whitespace.
+				(?> \S.* \n)+?					# actual term (not whitespace).	
+			)			
+			(?=\n?[ ]{0,3}:[ ])					# lookahead for following line feed 
+												#   with a definition mark.
+			}xm',
+			array($this, '_processDefListItems_callback_dt'), $list_str);
+
+		// Process actual definitions.
+		$list_str = preg_replace_callback('{
+			\n(\n+)?							# leading line = $1
+			(									# marker space = $2
+				[ ]{0,' . $less_than_tab . '}	# whitespace before colon
+				\:[ ]+							# definition mark (colon)
+			)
+			((?s:.+?))							# definition text = $3
+			(?= \n+ 							# stop at next definition mark,
+				(?:								# next term or end of text
+					[ ]{0,' . $less_than_tab . '} \:[ ]	|
+					<dt> | \z
+				)						
+			)					
+			}xm',
+			array($this, '_processDefListItems_callback_dd'), $list_str);
+
+		return $list_str;
+	}
+
+	/**
+	 * Callback for <dt> elements in definition lists
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _processDefListItems_callback_dt($matches) {
+		$terms = explode("\n", trim($matches[1]));
+		$text = '';
+		foreach ($terms as $term) {
+			$term = $this->runSpanGamut(trim($term));
+			$text .= "\n<dt>" . $term . "</dt>";
+		}
+		return $text . "\n";
+	}
+
+	/**
+	 * Callback for <dd> elements in definition lists
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _processDefListItems_callback_dd($matches) {
+		$leading_line	= $matches[1];
+		$marker_space	= $matches[2];
+		$def			= $matches[3];
+
+		if ($leading_line || preg_match('/\n{2,}/', $def)) {
+			// Replace marker with the appropriate whitespace indentation
+			$def = str_repeat(' ', strlen($marker_space)) . $def;
+			$def = $this->runBlockGamut($this->outdent($def . "\n\n"));
+			$def = "\n". $def ."\n";
+		}
+		else {
+			$def = rtrim($def);
+			$def = $this->runSpanGamut($this->outdent($def));
+		}
+
+		return "\n<dd>" . $def . "</dd>\n";
+	}
+
+	/**
+	 * Adding the fenced code block syntax to regular Markdown:
+	 *
+	 * ~~~
+	 * Code block
+	 * ~~~
+	 * 
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doFencedCodeBlocks($text) {
+	
+		$less_than_tab = $this->tab_width;
+		
+		$text = preg_replace_callback('{
+				(?:\n|\A)
+				# 1: Opening marker
+				(
+					(?:~{3,}|`{3,}) # 3 or more tildes/backticks.
+				)
+				[ ]*
+				(?:
+					\.?([-_:a-zA-Z0-9]+) # 2: standalone class name
+				)?
+				[ ]*
+				(?:
+					' . $this->id_class_attr_catch_re . ' # 3: Extra attributes
+				)?
+				[ ]* \n # Whitespace and newline following marker.
+				
+				# 4: Content
+				(
+					(?>
+						(?!\1 [ ]* \n)	# Not a closing marker.
+						.*\n+
+					)+
+				)
+				
+				# Closing marker.
+				\1 [ ]* (?= \n )
+			}xm',
+			array($this, '_doFencedCodeBlocks_callback'), $text);
+
+		return $text;
+	}
+
+	/**
+	 * Callback to process fenced code blocks
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doFencedCodeBlocks_callback($matches) {
+		$classname =& $matches[2];
+		$attrs     =& $matches[3];
+		$codeblock = $matches[4];
+
+		if ($this->code_block_content_func) {
+			$codeblock = call_user_func($this->code_block_content_func, $codeblock, $classname);
+		} else {
+			$codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
+		}
+
+		$codeblock = preg_replace_callback('/^\n+/',
+			array($this, '_doFencedCodeBlocks_newlines'), $codeblock);
+
+		$classes = array();
+		if ($classname != "") {
+			if ($classname{0} == '.')
+				$classname = substr($classname, 1);
+			$classes[] = $this->code_class_prefix . $classname;
+		}
+		$attr_str = $this->doExtraAttributes($this->code_attr_on_pre ? "pre" : "code", $attrs, null, $classes);
+		$pre_attr_str  = $this->code_attr_on_pre ? $attr_str : '';
+		$code_attr_str = $this->code_attr_on_pre ? '' : $attr_str;
+		$codeblock  = "<pre$pre_attr_str><code$code_attr_str>$codeblock</code></pre>";
+		
+		return "\n\n".$this->hashBlock($codeblock)."\n\n";
+	}
+
+	/**
+	 * Replace new lines in fenced code blocks
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doFencedCodeBlocks_newlines($matches) {
+		return str_repeat("<br$this->empty_element_suffix", 
+			strlen($matches[0]));
+	}
+
+	/**
+	 * Redefining emphasis markers so that emphasis by underscore does not
+	 * work in the middle of a word.
+	 * @var array
+	 */
+	protected $em_relist = array(
+		''  => '(?:(?<!\*)\*(?!\*)|(?<![a-zA-Z0-9_])_(?!_))(?![\.,:;]?\s)',
+		'*' => '(?<![\s*])\*(?!\*)',
+		'_' => '(?<![\s_])_(?![a-zA-Z0-9_])',
+	);
+	protected $strong_relist = array(
+		''   => '(?:(?<!\*)\*\*(?!\*)|(?<![a-zA-Z0-9_])__(?!_))(?![\.,:;]?\s)',
+		'**' => '(?<![\s*])\*\*(?!\*)',
+		'__' => '(?<![\s_])__(?![a-zA-Z0-9_])',
+	);
+	protected $em_strong_relist = array(
+		''    => '(?:(?<!\*)\*\*\*(?!\*)|(?<![a-zA-Z0-9_])___(?!_))(?![\.,:;]?\s)',
+		'***' => '(?<![\s*])\*\*\*(?!\*)',
+		'___' => '(?<![\s_])___(?![a-zA-Z0-9_])',
+	);
+
+	/**
+	 * Parse text into paragraphs
+	 * @param  string $text String to process in paragraphs
+	 * @param  boolean $wrap_in_p Whether paragraphs should be wrapped in <p> tags
+	 * @return string       HTML output
+	 */
+	protected function formParagraphs($text, $wrap_in_p = true) {
+		// Strip leading and trailing lines:
+		$text = preg_replace('/\A\n+|\n+\z/', '', $text);
+
+		$grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
+
+		// Wrap <p> tags and unhashify HTML blocks
+		foreach ($grafs as $key => $value) {
+			$value = trim($this->runSpanGamut($value));
+			
+			// Check if this should be enclosed in a paragraph.
+			// Clean tag hashes & block tag hashes are left alone.
+			$is_p = $wrap_in_p && !preg_match('/^B\x1A[0-9]+B|^C\x1A[0-9]+C$/', $value);
+			
+			if ($is_p) {
+				$value = "<p>$value</p>";
+			}
+			$grafs[$key] = $value;
+		}
+		
+		// Join grafs in one text, then unhash HTML tags. 
+		$text = implode("\n\n", $grafs);
+		
+		// Finish by removing any tag hashes still present in $text.
+		$text = $this->unhash($text);
+		
+		return $text;
+	}
+	
+	
+	/**
+	 * Footnotes - Strips link definitions from text, stores the URLs and
+	 * titles in hash references.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function stripFootnotes($text) {
+		$less_than_tab = $this->tab_width - 1;
+
+		// Link defs are in the form: [^id]: url "optional title"
+		$text = preg_replace_callback('{
+			^[ ]{0,' . $less_than_tab . '}\[\^(.+?)\][ ]?:	# note_id = $1
+			  [ ]*
+			  \n?					# maybe *one* newline
+			(						# text = $2 (no blank lines allowed)
+				(?:					
+					.+				# actual text
+				|
+					\n				# newlines but 
+					(?!\[.+?\][ ]?:\s)# negative lookahead for footnote or link definition marker.
+					(?!\n+[ ]{0,3}\S)# ensure line is not blank and followed 
+									# by non-indented content
+				)*
+			)		
+			}xm',
+			array($this, '_stripFootnotes_callback'),
+			$text);
+		return $text;
+	}
+
+	/**
+	 * Callback for stripping footnotes
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _stripFootnotes_callback($matches) {
+		$note_id = $this->fn_id_prefix . $matches[1];
+		$this->footnotes[$note_id] = $this->outdent($matches[2]);
+		return ''; // String that will replace the block
+	}
+
+	/**
+	 * Replace footnote references in $text [^id] with a special text-token 
+	 * which will be replaced by the actual footnote marker in appendFootnotes.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doFootnotes($text) {
+		if (!$this->in_anchor) {
+			$text = preg_replace('{\[\^(.+?)\]}', "F\x1Afn:\\1\x1A:", $text);
+		}
+		return $text;
+	}
+
+	/**
+	 * Append footnote list to text
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function appendFootnotes($text) {
+		$text = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}', 
+			array($this, '_appendFootnotes_callback'), $text);
+	
+		if (!empty($this->footnotes_ordered)) {
+			$text .= "\n\n";
+			$text .= "<div class=\"footnotes\">\n";
+			$text .= "<hr" . $this->empty_element_suffix . "\n";
+			$text .= "<ol>\n\n";
+
+			$attr = "";
+			if ($this->fn_backlink_class != "") {
+				$class = $this->fn_backlink_class;
+				$class = $this->encodeAttribute($class);
+				$attr .= " class=\"$class\"";
+			}
+			if ($this->fn_backlink_title != "") {
+				$title = $this->fn_backlink_title;
+				$title = $this->encodeAttribute($title);
+				$attr .= " title=\"$title\"";
+			}
+			$backlink_text = $this->fn_backlink_html;
+			$num = 0;
+			
+			while (!empty($this->footnotes_ordered)) {
+				$footnote = reset($this->footnotes_ordered);
+				$note_id = key($this->footnotes_ordered);
+				unset($this->footnotes_ordered[$note_id]);
+				$ref_count = $this->footnotes_ref_count[$note_id];
+				unset($this->footnotes_ref_count[$note_id]);
+				unset($this->footnotes[$note_id]);
+				
+				$footnote .= "\n"; // Need to append newline before parsing.
+				$footnote = $this->runBlockGamut("$footnote\n");				
+				$footnote = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}', 
+					array($this, '_appendFootnotes_callback'), $footnote);
+				
+				$attr = str_replace("%%", ++$num, $attr);
+				$note_id = $this->encodeAttribute($note_id);
+
+				// Prepare backlink, multiple backlinks if multiple references
+				$backlink = "<a href=\"#fnref:$note_id\"$attr>$backlink_text</a>";
+				for ($ref_num = 2; $ref_num <= $ref_count; ++$ref_num) {
+					$backlink .= " <a href=\"#fnref$ref_num:$note_id\"$attr>$backlink_text</a>";
+				}
+				// Add backlink to last paragraph; create new paragraph if needed.
+				if (preg_match('{</p>$}', $footnote)) {
+					$footnote = substr($footnote, 0, -4) . "&#160;$backlink</p>";
+				} else {
+					$footnote .= "\n\n<p>$backlink</p>";
+				}
+				
+				$text .= "<li id=\"fn:$note_id\">\n";
+				$text .= $footnote . "\n";
+				$text .= "</li>\n\n";
+			}
+			
+			$text .= "</ol>\n";
+			$text .= "</div>";
+		}
+		return $text;
+	}
+
+	/**
+	 * Callback for appending footnotes
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _appendFootnotes_callback($matches) {
+		$node_id = $this->fn_id_prefix . $matches[1];
+		
+		// Create footnote marker only if it has a corresponding footnote *and*
+		// the footnote hasn't been used by another marker.
+		if (isset($this->footnotes[$node_id])) {
+			$num =& $this->footnotes_numbers[$node_id];
+			if (!isset($num)) {
+				// Transfer footnote content to the ordered list and give it its
+				// number
+				$this->footnotes_ordered[$node_id] = $this->footnotes[$node_id];
+				$this->footnotes_ref_count[$node_id] = 1;
+				$num = $this->footnote_counter++;
+				$ref_count_mark = '';
+			} else {
+				$ref_count_mark = $this->footnotes_ref_count[$node_id] += 1;
+			}
+
+			$attr = "";
+			if ($this->fn_link_class != "") {
+				$class = $this->fn_link_class;
+				$class = $this->encodeAttribute($class);
+				$attr .= " class=\"$class\"";
+			}
+			if ($this->fn_link_title != "") {
+				$title = $this->fn_link_title;
+				$title = $this->encodeAttribute($title);
+				$attr .= " title=\"$title\"";
+			}
+			
+			$attr = str_replace("%%", $num, $attr);
+			$node_id = $this->encodeAttribute($node_id);
+			
+			return
+				"<sup id=\"fnref$ref_count_mark:$node_id\">".
+				"<a href=\"#fn:$node_id\"$attr>$num</a>".
+				"</sup>";
+		}
+		
+		return "[^" . $matches[1] . "]";
+	}
+		
+	
+	/**
+	 * Abbreviations - strips abbreviations from text, stores titles in hash
+	 * references.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function stripAbbreviations($text) {
+		$less_than_tab = $this->tab_width - 1;
+
+		// Link defs are in the form: [id]*: url "optional title"
+		$text = preg_replace_callback('{
+			^[ ]{0,' . $less_than_tab . '}\*\[(.+?)\][ ]?:	# abbr_id = $1
+			(.*)					# text = $2 (no blank lines allowed)	
+			}xm',
+			array($this, '_stripAbbreviations_callback'),
+			$text);
+		return $text;
+	}
+
+	/**
+	 * Callback for stripping abbreviations
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _stripAbbreviations_callback($matches) {
+		$abbr_word = $matches[1];
+		$abbr_desc = $matches[2];
+		if ($this->abbr_word_re) {
+			$this->abbr_word_re .= '|';
+		}
+		$this->abbr_word_re .= preg_quote($abbr_word);
+		$this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
+		return ''; // String that will replace the block
+	}
+
+	/**
+	 * Find defined abbreviations in text and wrap them in <abbr> elements.
+	 * @param  string $text
+	 * @return string
+	 */
+	protected function doAbbreviations($text) {
+		if ($this->abbr_word_re) {
+			// cannot use the /x modifier because abbr_word_re may 
+			// contain significant spaces:
+			$text = preg_replace_callback('{' .
+				'(?<![\w\x1A])' .
+				'(?:' . $this->abbr_word_re . ')' .
+				'(?![\w\x1A])' .
+				'}',
+				array($this, '_doAbbreviations_callback'), $text);
+		}
+		return $text;
+	}
+
+	/**
+	 * Callback for processing abbreviations
+	 * @param  array $matches
+	 * @return string
+	 */
+	protected function _doAbbreviations_callback($matches) {
+		$abbr = $matches[0];
+		if (isset($this->abbr_desciptions[$abbr])) {
+			$desc = $this->abbr_desciptions[$abbr];
+			if (empty($desc)) {
+				return $this->hashPart("<abbr>$abbr</abbr>");
+			} else {
+				$desc = $this->encodeAttribute($desc);
+				return $this->hashPart("<abbr title=\"$desc\">$abbr</abbr>");
+			}
+		} else {
+			return $matches[0];
+		}
+	}
+}
diff --git a/vendor/michelf/php-markdown/Michelf/MarkdownInterface.inc.php b/vendor/michelf/php-markdown/Michelf/MarkdownInterface.inc.php
new file mode 100644
index 000000000..c4e9ac7f6
--- /dev/null
+++ b/vendor/michelf/php-markdown/Michelf/MarkdownInterface.inc.php
@@ -0,0 +1,9 @@
+<?php
+
+// Use this file if you cannot use class autoloading. It will include all the
+// files needed for the MarkdownInterface interface.
+//
+// Take a look at the PSR-0-compatible class autoloading implementation
+// in the Readme.php file if you want a simple autoloader setup.
+
+require_once dirname(__FILE__) . '/MarkdownInterface.php';
diff --git a/vendor/michelf/php-markdown/Michelf/MarkdownInterface.php b/vendor/michelf/php-markdown/Michelf/MarkdownInterface.php
new file mode 100644
index 000000000..8512e3753
--- /dev/null
+++ b/vendor/michelf/php-markdown/Michelf/MarkdownInterface.php
@@ -0,0 +1,38 @@
+<?php
+/**
+ * Markdown  -  A text-to-HTML conversion tool for web writers
+ *
+ * @package   php-markdown
+ * @author    Michel Fortin <michel.fortin@michelf.com>
+ * @copyright 2004-2016 Michel Fortin <https://michelf.com/projects/php-markdown/>
+ * @copyright (Original Markdown) 2004-2006 John Gruber <https://daringfireball.net/projects/markdown/>
+ */
+
+namespace Michelf;
+
+/**
+ * Markdown Parser Interface 
+ */
+interface MarkdownInterface {
+	/**
+	 * Initialize the parser and return the result of its transform method.
+	 * This will work fine for derived classes too.
+	 *
+	 * @api
+	 *
+	 * @param  string $text
+	 * @return string
+	 */
+	public static function defaultTransform($text);
+
+	/**
+	 * Main function. Performs some preprocessing on the input text
+	 * and pass it through the document gamut.
+	 *
+	 * @api
+	 *
+	 * @param  string $text
+	 * @return string
+	 */
+	public function transform($text);
+}
diff --git a/vendor/michelf/php-markdown/Readme.md b/vendor/michelf/php-markdown/Readme.md
new file mode 100644
index 000000000..044407106
--- /dev/null
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+PHP Markdown
+============
+
+PHP Markdown Lib 1.7.0 - 29 Oct 2016
+
+by Michel Fortin  
+<https://michelf.ca/>
+
+based on Markdown by John Gruber  
+<https://daringfireball.net/>
+
+
+Introduction
+------------
+
+This is a library package that includes the PHP Markdown parser and its 
+sibling PHP Markdown Extra with additional features.
+
+Markdown is a text-to-HTML conversion tool for web writers. Markdown
+allows you to write using an easy-to-read, easy-to-write plain text
+format, then convert it to structurally valid XHTML (or HTML).
+
+"Markdown" is actually two things: a plain text markup syntax, and a 
+software tool, originally written in Perl, that converts the plain text 
+markup to HTML. PHP Markdown is a port to PHP of the original Markdown 
+program by John Gruber.
+
+*	[Full documentation of the Markdown syntax](<https://daringfireball.net/projects/markdown/>)  
+	— Daring Fireball (John Gruber)
+*	[Markdown Extra syntax additions](<https://michelf.ca/projects/php-markdown/extra/>)  
+	— Michel Fortin
+
+
+Requirement
+-----------
+
+This library package requires PHP 5.3 or later.
+
+Note: The older plugin/library hybrid package for PHP Markdown and
+PHP Markdown Extra is still maintained and will work with PHP 4.0.5 and later.
+
+Before PHP 5.3.7, pcre.backtrack_limit defaults to 100 000, which is too small
+in many situations. You might need to set it to higher values. Later PHP 
+releases defaults to 1 000 000, which is usually fine.
+
+
+Usage
+-----
+
+This library package is meant to be used with class autoloading. For autoloading 
+to work, your project needs have setup a PSR-0-compatible autoloader. See the 
+included Readme.php file for a minimal autoloader setup. (If you cannot use 
+autoloading, see below.)
+
+With class autoloading in place, putting the 'Michelf' folder in your 
+include path should be enough for this to work:
+
+	use \Michelf\Markdown;
+	$my_html = Markdown::defaultTransform($my_text);
+
+Markdown Extra syntax is also available the same way:
+
+	use \Michelf\MarkdownExtra;
+	$my_html = MarkdownExtra::defaultTransform($my_text);
+
+If you wish to use PHP Markdown with another text filter function 
+built to parse HTML, you should filter the text *after* the `transform`
+function call. This is an example with [PHP SmartyPants][psp]:
+
+	use \Michelf\Markdown, \Michelf\SmartyPants;
+	$my_html = Markdown::defaultTransform($my_text);
+	$my_html = SmartyPants::defaultTransform($my_html);
+
+All these examples are using the static `defaultTransform` static function 
+found inside the parser class. If you want to customize the parser 
+configuration, you can also instantiate it directly and change some 
+configuration variables:
+
+	use \Michelf\MarkdownExtra;
+	$parser = new MarkdownExtra;
+	$parser->fn_id_prefix = "post22-";
+	$my_html = $parser->transform($my_text);
+
+To learn more, see the full list of [configuration variables].
+
+ [configuration variables]: https://michelf.ca/projects/php-markdown/configuration/
+
+
+### Usage without an autoloader
+
+If you cannot use class autoloading, you can still use `include` or `require` 
+to access the parser. To load the `\Michelf\Markdown` parser, do it this way:
+
+	require_once 'Michelf/Markdown.inc.php';
+
+Or, if you need the `\Michelf\MarkdownExtra` parser:
+
+	require_once 'Michelf/MarkdownExtra.inc.php';
+
+While the plain `.php` files depend on autoloading to work correctly, using the
+`.inc.php` files instead will eagerly load the dependencies that would be 
+loaded on demand if you were using autoloading.
+
+
+Public API and Versioning Policy
+---------------------------------
+
+Version numbers are of the form *major*.*minor*.*patch*.
+
+The public API of PHP Markdown consist of the two parser classes `Markdown`
+and `MarkdownExtra`, their constructors, the `transform` and `defaultTransform`
+functions and their configuration variables. The public API is stable for
+a given major version number. It might get additions when the minor version
+number increments.
+
+**Protected members are not considered public API.** This is unconventional 
+and deserves an explanation. Incrementing the major version number every time 
+the underlying implementation of something changes is going to give
+nonessential version numbers for the vast majority of people who just use the
+parser.  Protected members are meant to create parser subclasses that behave in
+different ways. Very few people create parser subclasses. I don't want to 
+discourage it by making everything private, but at the same time I can't 
+guarantee any stable hook between versions if you use protected members.
+
+**Syntax changes** will increment the minor number for new features, and the 
+patch number for small corrections. A *new feature* is something that needs a 
+change in the syntax documentation. Note that since PHP Markdown Lib includes
+two parsers, a syntax change for either of them will increment the minor 
+number. Also note that there is nothing perfectly backward-compatible with the
+Markdown syntax: all inputs are always valid, so new features always replace
+something that was previously legal, although generally nonsensical to do.
+
+
+Bugs
+----
+
+To file bug reports please send email to:
+<michel.fortin@michelf.ca>
+
+Please include with your report: (1) the example input; (2) the output you
+expected; (3) the output PHP Markdown actually produced.
+
+If you have a problem where Markdown gives you an empty result, first check 
+that the backtrack limit is not too low by running `php --info | grep pcre`.
+See Installation and Requirement above for details.
+
+
+Development and Testing
+-----------------------
+
+Pull requests for fixing bugs are welcome. Proposed new features are
+going to be meticulously reviewed -- taking into account backward compatibility, 
+potential side effects, and future extensibility -- before deciding on
+acceptance or rejection.
+
+If you make a pull request that includes changes to the parser please add 
+tests for what is being changed to [MDTest][] and make a pull request there 
+too.
+
+ [MDTest]: https://github.com/michelf/mdtest/
+
+
+Donations
+---------
+
+If you wish to make a donation that will help me devote more time to 
+PHP Markdown, please visit [michelf.ca/donate] or send Bitcoin to
+[1HiuX34czvVPPdhXbUAsAu7pZcesniDCGH].
+
+ [michelf.ca/donate]: https://michelf.ca/donate/#!Thanks%20for%20PHP%20Markdown
+ [1HiuX34czvVPPdhXbUAsAu7pZcesniDCGH]: bitcoin:1HiuX34czvVPPdhXbUAsAu7pZcesniDCGH
+
+
+Version History
+---------------
+
+PHP Markdown Lib 1.7.0 (29 Oct 2016)
+
+*	Added a `hard_wrap` configuration variable to make all newline characters 
+	in the text become `<br>` tags in the HTML output. By default, according 
+	to the standard Markdown syntax these newlines are ignored unless they a 
+	preceded by two spaces. Thanks to Jonathan Cohlmeyer for the implementation.
+
+*	Improved the parsing of list items to fix problematic cases that came to 
+	light with the addition of `hard_wrap`. This should have no effect on the 
+	output except span-level list items that ended with two spaces (and thus 
+	ended with a line break).
+
+*	Added a `code_span_content_func` configuration variable which takes a 
+	function that will convert the content of the code span to HTML. This can
+	be useful to implement syntax highlighting. Although contrary to its 
+	code block equivalent, there is no syntax for specifying a language. 
+	Credits to styxit for the implementation.
+
+*	Fixed a Markdwon Extra issue where two-space-at-end-of-line hard breaks 
+	wouldn't work inside of HTML block elements such as `<p markdown="1">` 
+	where the element expects only span-level content.
+
+*	In the parser code, switched to PHPDoc comment format. Thanks to 
+	Robbie Averill for the help.
+
+
+PHP Markdown Lib 1.6.0 (23 Dec 2015)  
+
+Note: this version was incorrectly released as 1.5.1 on Dec 22, a number 
+that contradicted the versioning policy.
+
+*	For fenced code blocks in Markdown Extra, can now set a class name for the 
+	code block's language before the special attribute block. Previously, this 
+	class name was only allowed in the absence of the special attribute block.
+
+*	Added a `code_block_content_func` configuration variable which takes a 
+	function that will convert the content of the code block to HTML. This is 
+	most useful for syntax highlighting. For fenced code blocks in Markdown 
+	Extra, the function has access to the language class name (the one outside 
+	of the special attribute block). Credits to Mario Konrad for providing the 
+	implementation.
+
+*	The curled arrow character for the backlink in footnotes is now followed
+	by a Unicode variant selector to prevent it from being displayed in emoji
+	form on iOS.
+
+	Note that in older browsers the variant selector is often interpreted as a 
+	separate character, making it visible after the arrow. So there is now a 
+	also a `fn_backlink_html` configuration variable that can be used to set 
+	the link text to something else. Credits to Dana for providing the 
+	implementation.
+
+*	Fixed an issue in MarkdownExtra where long header lines followed by a
+	special attribute block would hit the backtrack limit an cause an empty
+	string to be returned.
+
+
+PHP Markdown Lib 1.5.0 (1 Mar 2015)
+
+*	Added the ability start ordered lists with a number different from 1 and
+	and have that reflected in the HTML output. This can be enabled with
+	the `enhanced_ordered_lists` configuration variable for the Markdown 
+	parser; it is enabled by default for Markdown Extra.
+	Credits to Matt Gorle for providing the implementation.
+
+*	Added the ability to insert custom HTML attributes with simple values 
+	everywhere an extra attribute block is allowed (links, images, headers).
+	The value must be unquoted, cannot contains spaces and is limited to 
+	alphanumeric ASCII characters.
+	Credits to Peter Droogmans for providing the implementation.
+
+*	Added a `header_id_func` configuration variable which takes a function
+	that can generate an `id` attribute value from the header text.
+	Credits to Evert Pot for providing the implementation.
+
+*	Added a `url_filter_func` configuration variable which takes a function
+	that can rewrite any link or image URL to something different.
+
+
+PHP Markdown Lib 1.4.1 (4 May 2014)
+
+*	The HTML block parser will now treat `<figure>` as a block-level element
+	(as it should) and no longer wrap it in `<p>` or parse it's content with 
+	the as Markdown syntax (although with Extra you can use `markdown="1"`
+	if you wish to use the Markdown syntax inside it).
+
+*	The content of `<style>` elements will now be left alone, its content
+	won't be interpreted as Markdown.
+
+*	Corrected an bug where some inline links with spaces in them would not
+	work even when surounded with angle brackets:
+	
+		[link](<s p a c e s>)
+
+*	Fixed an issue where email addresses with quotes in them would not always
+	have the quotes escaped in the link attribute, causing broken links (and
+	invalid HTML).
+
+*	Fixed the case were a link definition following a footnote definition would
+	be swallowed by the footnote unless it was separated by a blank line.
+
+
+PHP Markdown Lib 1.4.0 (29 Nov 2013)
+
+*	Added support for the `tel:` URL scheme in automatic links.
+
+		<tel:+1-111-111-1111>
+	
+	It gets converted to this (note the `tel:` prefix becomes invisible):
+	
+		<a href="tel:+1-111-111-1111">+1-111-111-1111</a>
+
+*	Added backtick fenced code blocks to MarkdownExtra, originally from
+	Github-Flavored Markdown.
+
+*	Added an interface called MarkdownInterface implemented by both
+	the Markdown and MarkdownExtra parsers. You can use the interface if
+	you want to create a mockup parser object for unit testing.
+
+*	For those of you who cannot use class autoloading, you can now
+	include `Michelf/Markdown.inc.php` or `Michelf/MarkdownExtra.inc.php` (note 
+	the 	`.inc.php` extension) to automatically include other files required
+	by the parser.
+
+
+PHP Markdown Lib 1.3 (11 Apr 2013)
+
+This is the first release of PHP Markdown Lib. This package requires PHP 
+version 5.3 or later and is designed to work with PSR-0 autoloading and, 
+optionally with Composer. Here is a list of the changes since 
+PHP Markdown Extra 1.2.6:
+
+*	Plugin interface for WordPress and other systems is no longer present in
+	the Lib package. The classic package is still available if you need it:
+	<https://michelf.ca/projects/php-markdown/classic/>
+
+*	Added `public` and `protected` protection attributes, plus a section about
+	what is "public API" and what isn't in the Readme file.
+
+*	Changed HTML output for footnotes: now instead of adding `rel` and `rev`
+	attributes, footnotes links have the class name `footnote-ref` and
+	backlinks `footnote-backref`.
+
+*	Fixed some regular expressions to make PCRE not shout warnings about POSIX
+	collation classes (dependent on your version of PCRE).
+
+*	Added optional class and id attributes to images and links using the same
+	syntax as for headers:
+
+		[link](url){#id .class}  
+		![img](url){#id .class}
+	
+	It work too for reference-style links and images. In this case you need
+	to put those attributes at the reference definition:
+
+		[link][linkref] or [linkref]  
+		![img][linkref]
+		
+		[linkref]: url "optional title" {#id .class}
+
+*	Fixed a PHP notice message triggered when some table column separator 
+	markers are missing on the separator line below column headers.
+
+*	Fixed a small mistake that could cause the parser to retain an invalid
+	state related to parsing links across multiple runs. This was never 
+	observed (that I know of), but it's still worth fixing.
+
+
+Copyright and License
+---------------------
+
+PHP Markdown Lib
+Copyright (c) 2004-2016 Michel Fortin
+<https://michelf.ca/>  
+All rights reserved.
+
+Based on Markdown  
+Copyright (c) 2003-2005 John Gruber   
+<https://daringfireball.net/>   
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+*   Redistributions of source code must retain the above copyright 
+    notice, this list of conditions and the following disclaimer.
+
+*   Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the 
+    distribution.
+
+*   Neither the name "Markdown" nor the names of its contributors may
+    be used to endorse or promote products derived from this software
+    without specific prior written permission.
+
+This software is provided by the copyright holders and contributors "as
+is" and any express or implied warranties, including, but not limited
+to, the implied warranties of merchantability and fitness for a
+particular purpose are disclaimed. In no event shall the copyright owner
+or contributors be liable for any direct, indirect, incidental, special,
+exemplary, or consequential damages (including, but not limited to,
+procurement of substitute goods or services; loss of use, data, or
+profits; or business interruption) however caused and on any theory of
+liability, whether in contract, strict liability, or tort (including
+negligence or otherwise) arising in any way out of the use of this
+software, even if advised of the possibility of such damage.
diff --git a/vendor/michelf/php-markdown/Readme.php b/vendor/michelf/php-markdown/Readme.php
new file mode 100644
index 000000000..89449dea4
--- /dev/null
+++ b/vendor/michelf/php-markdown/Readme.php
@@ -0,0 +1,31 @@
+<?php
+
+// This file passes the content of the Readme.md file in the same directory
+// through the Markdown filter. You can adapt this sample code in any way
+// you like.
+
+// Install PSR-0-compatible class autoloader
+spl_autoload_register(function($class){
+	require preg_replace('{\\\\|_(?!.*\\\\)}', DIRECTORY_SEPARATOR, ltrim($class, '\\')).'.php';
+});
+
+// Get Markdown class
+use \Michelf\Markdown;
+
+// Read file and pass content through the Markdown parser
+$text = file_get_contents('Readme.md');
+$html = Markdown::defaultTransform($text);
+
+?>
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>PHP Markdown Lib - Readme</title>
+    </head>
+    <body>
+		<?php
+			// Put HTML content in the document
+			echo $html;
+		?>
+    </body>
+</html>
diff --git a/vendor/michelf/php-markdown/composer.json b/vendor/michelf/php-markdown/composer.json
new file mode 100644
index 000000000..36a4f744a
--- /dev/null
+++ b/vendor/michelf/php-markdown/composer.json
@@ -0,0 +1,31 @@
+{
+	"name": "michelf/php-markdown",
+	"type": "library",
+	"description": "PHP Markdown",
+	"homepage": "https://michelf.ca/projects/php-markdown/",
+	"keywords": ["markdown"],
+	"license": "BSD-3-Clause",
+	"authors": [
+		{
+			"name": "Michel Fortin",
+			"email": "michel.fortin@michelf.ca",
+			"homepage": "https://michelf.ca/",
+			"role": "Developer"
+		},
+		{
+			"name": "John Gruber",
+			"homepage": "https://daringfireball.net/"
+		}
+	],
+	"require": {
+		"php": ">=5.3.0"
+	},
+	"autoload": {
+ 		"psr-0": { "Michelf": "" }
+	},
+	"extra": {
+		"branch-alias": {
+			"dev-lib": "1.4.x-dev"
+		}
+	}
+}