Added support for QML to Weasel

Qt 5.3 added a QtWebsockets module which makes Weasel the perfect candidate for a QML/JS Clojurescript repl.

I added a weasel.repl.qml namespace which tries to mirror weasel.repl as much as possible.

I also added a trivial weasel.impls.print ns to so that the same repl server can set the print function regardless of whether it's a regular Websocket, QML or possibly say a Node.js repl.

I posted details here about how I actually got a REPL working in QML: https://groups.google.com/forum/#!topic/clojurescript/bSBfH1hazSg
Looks like this bug just got fixed - would you want to push it to 0.0-2268? I am also a little unclear as to how provided dependencies work. I did find there was some issue compiling the REPL for QML with 0.0-2202 - that's why I upgraded. Your call really what dependencies to use - I wanted to exclude project.clj from the pull request, but couldn't find a way to do that.