* Fixing an error with errors in backends.py
* Adding backend slot and rave class "interface" - for now, we are going to use SFML's, and there has to be a way to access it somehow.
* Filling the above with some obvious SFML classes (input classes and Event)
* Make init.rv run in the rave.game namespace because that's where it belongs. Having no namespace just causes problems.
* Give the sample game its own main loop so it actually somewhat behaves like a proper application now
* Replace those stupid eyes with the rave logo because they annoy me :P