ANN: ClojureScript 0.0-2261

[David Nolen]

ClojureScript, the Clojure compiler that emits JavaScript source code.

README and source code: https://github.com/clojure/clojurescript

New release version: 0.0-2261

Leiningen dependency information:

[org.clojure/clojurescript "0.0-2261"]

### Changes
* Dependency on Clojure 1.6.0
* Dependency on latest Google Closure Compiler

### Enhancements
* Murmur3 hashing for collections

### Fixes
* CLJS-817: Warning on use of undeclared var when creating recursive definition
* CLJS-819: cljs.reader cannot handle character classes beginning with
slashes in regex literals
* CLJS-820: Missing invoke without arguments in MetaFn
* CLJS-816: clojure.set/rename-keys accidentally deletes keys