Second part of refactoring; should be runnable again, yet not thoroughly tested

dav/sabre-vobject/lib/Sabre/VObject/Element.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Sabre\VObject;
+
+/**
+ * Base class for all elements
+ *
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+abstract class Element extends Node {
+
+    public $parent = null;
+
+}