GSAP 1.8.2

- Added support for passing selector strings into the stagger methods in TimelineLite/Max and TweenMax, like staggerTo(), staggerFrom(), and staggerFromTo(). For example ".myClass" or "#myID"
- Added support for selector objects in the stagger methods. For example, if you pass in a jQuery object that has multiple elements.
- Added support for selector strings and objects in the TweenMax.killChildTweensOf() method
- clearProps support in CSSPlugin