Sass/4.0

Use translate3d instead of X/Y

Drop Android 3 support, update prefixes

Minor bug fixes

Republish Package

CSS Rebuild

Bump bower version to 3.2.1

Tagging is hard

Refactor and optimisations

Release 3.1.1

Merge pull request animate-css#154 from mrwillis21/rubberBand

Add “rubber band” animation.