The sad thing with animation libraries is, at least in my opinion, that in the end it comes down to a performance race.<p>I loved popmotion at first, but once you hit the first performance bottleneck you can either contribute and fix performance issues yourself or choose a different library (most likely not the hip, new one).<p>I do not want to convey the message that people should stop creating animation libraries, I think that innovation is great, but the road for such a library to be useful in production is a long one.