Tiny.TweenManager.prototype.removeByObject = function (obj) {
var tweens = this.group._tweens;
var tweenIds = Object.keys(tweens);
for (var i = 0; i < tweenIds.length; i++) {
var tween = tweens[tweenIds[i]];
if (tween._object === obj) this.remove(tween);
}
};