More of a feature request / suggestion

[Armegalo]

While PAUSE and PLAY are great, GOTOANDPLAY, GOTOANDSTOP would be super nice.
Similarly, the ability to run a callback function from a particular frame within the tween, not just the ends. - i.e. something like...
anyTween.onFrame(14) = () => possiblyBlink();
anyTween.onFrame(25) = () => maybeBlowBubbles();

Finally, an easy one - rotate sprite to path option.

Bought your Pixi book by the way - great stuff, keep up the good work :)