:sparkles: relating events to events

plugins/cia-post-types/includes/p2p-mappings.php

@@ -22,6 +22,7 @@ function register_connections_for($type, $from_types) {
 function register_all_one_offs() {
     register_connections_for('artist', ['artist']);
     register_connections_for('short', ['technique']);
+    register_connections_for('event', ['event']);
 }
 
 function all_connection_types() {