Added screen.py for GUI purposes, and extended LevelGui to have a toolbar that goes invisible.
A commit in an attempt to merge.
Merge remote-tracking branch 'origin'
Merge branch 'master' of https://github.com/srli/fsm_thegame
Merge branch 'master' of https://github.com/srli/fsm_thegame
Merge branch 'master' of https://github.com/srli/fsm_thegame
Merge branch 'master' of https://github.com/srli/fsm_thegame
Allows us to have pre-defined enables, states, and transitions
-a