⬆️ 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/ezyang/htmlpurifier/extras/HTMLPurifierExtras.autoload-legacy.php

@@ -0,0 +1,15 @@
+<?php
+
+/**
+ * @file
+ * Legacy autoloader for systems lacking spl_autoload_register
+ *
+ * Must be separate to prevent deprecation warning on PHP 7.2
+ */
+
+function __autoload($class)
+{
+    return HTMLPurifierExtras::autoload($class);
+}
+
+// vim: et sw=4 sts=4