Fixed an error that stopped 2 tweens from being able to run on the same object. Also refactored a lot of the classes to remove prototype properties and move them to local instance properties.

src/gameobjects/Events.js

@@ -18,4 +18,8 @@ Phaser.Events = function (sprite) {
     this.onDragStart = null;
     this.onDragStop = null;
 
+	this.onAnimationStart = null;
+	this.onAnimationComplete = null;
+	this.onAnimationLoop = null;
+
 };