I think that the addition of support for keyframe-based animations in 1.1.5 is really the killer feature. This will allow for drop-in animations (like animate.

I think that the addition of support for keyframe-based animations in 1.1.5 is really the killer feature. This will allow for drop-in animations (like animate.css, mentioned in the deck) in the same sort of way that bootstrap allowed for drop-in styles.