Echo JS 0.11.0

A React Native-like its what I want to develop on top of this module, as next step.

> No idea if/how hard it is to develop/design custom controls against libui though.

I've yet to explore these lands, but I guess the following:

* Completely new custom control, based on bare metal GUI native API controls and available on OSX, Linux, Windows: Difficult

* Custom control based on existing libui UiArea, where you handle custom drawing (you write code once, same drawing on each platform): Medium 

* Custom control where you mix some existing widgets to implement a new one: Easy