Truth be told Flash is a great, I mean GREAT, platform and HTML is making strides to be more like it. It does/did everything that HTML5+ wants to do in a contained executable -- any new HTML/JS/CSS feature is already doable with Flash. Flash isn't without its warts, but that's not the point, but if you were to take a step back and evaluate it without bias, you'd be impressed with what Macromedia/Adobe did with that runtime.

Anyway, I like the idea behind this library. I like that you can compose the animation keyframes the way it does. Any suggestions that I'd make to "improve" it would probably bloat it up -- classname selectors, css-based animations/transitions. What I like most about this lib is how it does what it does in such a small package.

The syntax was inspired by flash. I really like that one liners you could do in there. My company is now using this for advertisements banners and such.