12.0.13

- Fixed issue that could cause the last tween in a TweenMax.staggerTo() not to swap in the tween instance for "{self}" in the onCompleteParams when an onCompleteAll was defined.

- Added "soundTransform" property to VideoLoader

- The _addTween() method of TweenPlugin now returns the PropTween instance if one is created (or null if not). This can help optimize some other code.

- Minor optimizations