It's unsupported because "making the smallest thing" just for the sake of being small is silly to support, and there WILL be issues that will creep up...I'm just not aware of what. It's also not optimal, just the like mentioned mitt, because optimizations sometimes use more code to handle special cases, and that would ruin the whole "smallest" aspect :)
I wouldn't use mitt, nor litt, but something 1. proven to work 2. proven to be efficient - in that order. This is actually a social experiment I'm conducting. I want to see if people love it or hate it, and why. mitt showed extreme popularity (+1400 stars). litt should follow if it is "better" in this aspect (size), right? Personally I think it won't. I think it's popular simply because the guy who wrote "preact" wrote mitt. We will see...!
