Merge branch 'pr/553’

* pr/553:
  Optimized Events.trigger method when no event is emitted

Author: liabru

src/core/Events.js

@@ -84,15 +84,17 @@ var Common = require('./Common');
             callbacks,
             eventClone;
 
-        if (object.events) {
+        var events = object.events;
+        
+        if (events && Common.keys(events).length > 0) {
             if (!event)
                 event = {};
 
             names = eventNames.split(' ');
 
             for (var i = 0; i < names.length; i++) {
                 name = names[i];
-                callbacks = object.events[name];
+                callbacks = events[name];
 
                 if (callbacks) {
                     eventClone = Common.clone(event, false);