Added new example UI and .coffee example loader.
Also a few tweaks to Sketch to be able to stop the runloop.
Added static file server 'examples' task to Cakefile.
Added CodeMirror editor to examples page.
Fixed unset onBar bug in Tempo.
Fixed bug in Sketch that would make them unstoppable.
Added separate math package and moved Vector and related classes into it.
Updated version to 0.0.6 and added web build files.