Make Packrat account for padding+extrude
Creating a simple event dispatcher

This is basically a very simplified version of the Flash event
dispatcher... I'm not really sure why I made it but it seemed worthwhile
at the time :)
RXDispatcher tweaks
Testing weak referenced listeners
Trying to write weak events
RXWeak works!

It only works with Actions right now, but at least the idea is solid.
SKMain cleanup
Moving lots of things around