Move to more PSR-4 standards.

lib/OpenPgP/ExperimentalPacket.php

@@ -0,0 +1,11 @@
+<?php
+
+/**
+ * OpenPGP Private or Experimental packet (tags 60..63).
+ *
+ * @see http://tools.ietf.org/html/rfc4880#section-4.3
+ */
+class ExperimentalPacket extends Packet
+{
+	protected $tag = 60;
+}