I've seen it mentioned by a few people, including Redux creator Dan Abramov (who is very open about tweeting links to 'competing' libraries!), but I've only taken a brief look so far.

My initial impression is that it seems really interesting, although I wonder if the use of generators will scare people away. Many devs are already exhausted with the number of new JavaScript features they're being told to learn.

I definitely want to dig a bit deeper and try it out properly though.