Working on release notes.

Release notes draft: https://github.com/clojure/clojurescript-site/pull/383

the optimizations as a compiler pass is great

@darwin Perhaps cljs-oss/canary / babot needs to be migrated over from http://travis-ci.org to http://travis-ci.com (and an application submitted for free execution under their Open-Source Plan). Looks like we have a week before they shut http://travis-ci.org down. I'm in the process of doing that for repos I own.