Clojurians Log v2

First pass at using npm & core.async on master, thoughts welcome. This is a try out, I think it's a bit too clunky as is.. https://github.com/juxt/mach/blob/master/examples/npm/Machfile.edn

looking at auto requiring the cljs core async nses

@jonpither you have probably already discovered this, but you need to use andare for lumo

yeah we package in lib now..