I'm refining the above with docs right now

I'd love to add it to boot-reload/boot-cljs as well but if it ends up in core than there is no need 😉

Thanks Bruce btw

From 100 lines of compiler options spec-ing to 1000

https://gist.github.com/bhauman/2dca87815dfd92b3ff596bdc1e56c964

This adds * store documention on keys * key doc look up from explain-data * complex co-dependency warnings * complex co-dependency failures with explanations (ie. closure-defines has complex co-dependencies)