I really like your website design, very clean and readable without sacrificing style. The library is very nice too. The only thing I would add is, uh, rub som

I really like your website design, very clean and readable without sacrificing style. The library is very nice too. The only thing I would add is, uh, rub some Category Theory on it. It seems like you could "go all the way" and define a formal mathematical semantics for animations, which would be nice. VPRI STEPS project made a quasi-mathematical language called Nile for compositing 2D vector graphics ( http://www.vpri.org/pdf/tr2009016_steps09.pdf http://www.vpri.org/pdf/tr2009016_steps09.pdf ) that might be something to look at.