OP here, I created this for fun then it started growing and now I released it in case anyone want to play with it, I hope you like it. It's not a clone of jquery so it's not exactly like Zepto.js.
I specially love the build system I made with grunt, so each new function is just a folder in /src/plugins and it includes the "documentation.md" and "test.js" automagically.
PS, yes, it has bugs and it's probably not production-ready. However I would love as much feedback as possible. Of course ask me anything you want (: