Caught this in my diff file after working on an additional animation I
want to contribute (coming soon!). Grunt builded and this section
changed, to my surprise. After further testing, I found out
*rotateOutUpLeft* was broken, even on the animate.css site. Checking in
here as a potential fix.
Bug and fix tested on Chrome and Safari on OS X.
Since IE10 dropped the animation, transform, and transition prefixes,
and no stable release was made with them, we can safely drop the
prefixes, too. Cutting a good 20% off the file sizes!
