plexus: also check out zelkova https://github.com/jamesmacaulay/zelkova

@jellea not sure if that isn't just making things more complicated for me at this stage 😄

still fuzzy on how to handle state changes triggered by a game loop

this is what I currently have https://github.com/plexus/goatrunner/blob/master/src/cljs/goatrunner/core.cljs#L165-L176

using om/get-props to get the current root cursor, and then updating that based on core.async/timeouts

but performance is way below what it should be. Rendering I've managed to optimize somewhat, but getting more/longer GC runs than I would expect