Updating GSAP to 1.9.5

In the past, we submitted the pull requests through the jackdoyle account, but it seemed like something got funky in the sync there with you guys, so I'm switching to the greensock account. I hope that's okay. 

--------

- Improvements to the ticker's fps capping algorithm

- Worked around an iOS bug that prevents requestAnimationFrame from working correctly in certain [relatively rare] situations. Falls back to setTimeout() in that scenario.

- Fixed issue that could cause zero-duration tweens/callbacks at the very beginning of a timeline not to fire their onReverseComplete if the playhead lands on a SUPER small value, like 0.000001 seconds.

- Adjusted the behavior of TimelineMax's tweenFromTo() method so that it seeks to the initial from() spot. That way, events/callbacks are suppressed which seems like the more natural behavior.

- Improved KineticPlugin, making it compatible with BezierPlugin internally

- Minor improvements in CSSPlugin, mostly around 3D calculations