Hi, thank for the question!
I was doing a lot of animation work and there was a lack of animation tools I've got used to, so I've started to write modules myself. After a while, I noticed the system in what I've written so decided to release it.
As for maintaining part - it is heavily covered with unit and environmental tests, of course, it adds some overhead but ensures that your tool is robust and works in every browser.
It is a side project and we still expect more contributions from the community.