Rename EventType protocol and update dependencies

I'm new to Clojure and not sure if updating the dependencies of your project is what you want to do in this situation. Anway, ClojureScript 0.0-2311 changed the event/EventType protocol to event/IEventType. Furthermore, with the new version of ClojureScript, the weasel-example project won't compile unless I upgrade to Clojure 1.6.0 (which makes sense considering this message from David Nolen: https://groups.google.com/d/msg/clojurescript/MEFJ5D7g8yM/cbiJJTyrKjsJ).