Echo JS 0.11.0

Good luck, nice to see more efforts in this area... would suggest working towards implementing the features in the material-ui and bootstrap projects at the very least.

Suggestion: If you aren't already, when you render if there are missing ARIA properties, writing to console.warn.  I wish more projects did this as a matter of course.  Wrappers for common img (Image), svg (SvgImage) and similar would also be recommended so the error messages can be outputted as well.

Aside: didn't have time to dig into the source, I have with material-ui and like their approach a lot.  There have been a handful of gotchas wrt accessibility there, but overall not so bad.