a few animation libraries to check out:
https://github.com/mrdoob/three.js/ https://github.com/legomushroom/mojs https://github.com/maxwellito/vivus https://github.com/jlmakes/scrollreveal https://github.com/thednp/kute.js/
http://animejs.com/ https://createjs.com/ https://popmotion.io http://velocityjs.org/ http://paperjs.org/ and of course https://greensock.com/
