⬆️ Update libraries.

michelf/php-markdown (1.7.0 => 1.8.0)
ezyang/htmlpurifier (v4.9.3 => v4.10.0)
commerceguys/intl (v0.7.4 => v0.7.5)
sabre/http (4.2.3 => v4.2.4)
sabre/vobject (4.1.3 => 4.1.5)

vendor/michelf/php-markdown/Readme.php

@@ -4,13 +4,15 @@
 // through the Markdown filter. You can adapt this sample code in any way
 // you like.
 
-// Install PSR-0-compatible class autoloader
+// Install PSR-4-compatible class autoloader
 spl_autoload_register(function($class){
-	require preg_replace('{\\\\|_(?!.*\\\\)}', DIRECTORY_SEPARATOR, ltrim($class, '\\')).'.php';
+	require str_replace('\\', DIRECTORY_SEPARATOR, ltrim($class, '\\')).'.php';
 });
+// If using Composer, use this instead:
+//require 'vendor/autoloader.php';
 
 // Get Markdown class
-use \Michelf\Markdown;
+use Michelf\Markdown;
 
 // Read file and pass content through the Markdown parser
 $text = file_get_contents('Readme.md');