Add upstream plugins

Signed-off-by: Adrian Nöthlich <git@promasu.tech>

wp-content/plugins/all-in-one-event-calendar/lib/exception/error.php

@@ -0,0 +1,13 @@
+<?php
+
+/**
+ * Exception that is raised when a PHP error happens in our plugin.
+ *
+ * @author     Time.ly Network Inc
+ * @since      2.0
+ *
+ * @package    AI1EC
+ * @subpackage AI1EC.Exception
+ */
+class Ai1ec_Error_Exception extends ErrorException {
+}