Broken again

Split project into three python files
Added UI.Key_Handler
Added Bridge_Mode
Added Car_Status
Added random Entity names
Added Entity.create_timestamp()
Removed Entity.handle_cs()
Wrote Entity.check_for_bridge()
Changed Entity.start() to Entity.main_thread()
Added Entity.start()
Re-added call to EntityManager.set_layer_object()
Wrote EntityManager.start()