Clojurescript with React-native advanced compilation

I'm trying to use :advanced mode to compile more efficient javascript.

There are 3 branches:

• master: this is the baseline. The app is unmodified after using re-natal init, so it uses :simple optimizations
• using_goog_object: use goog.object instead of .-someprop to access javascript object properties as suggested by @pesterhazy on #cljsrn
• react_native_extern: use https://github.com/artemyarulin/react-native-externs as suggested by @mfikes on #cljsrn

lein clean && lein prod-build && react-native run-ios --configuration Release

All branches now work perfectly.