68 fit pep 8 naming standards (#69)
* rename functions in utility
* rename functions in save
* rename functions in modebase
* rename functions in modegamemenu
* rename functions in inputframe
* input -> gameinput
* input -> gameinput
* rename functions in gameinput
* rename functions in fontwrap
* rename functions in display
* rename functions in animesprite
* fixing tests
* fixing tests
* rename functions in test_utility
* rename functions in test_save
* rename functions in test_gameinput
* rename functions in test_display
* rename functions in game
* fixing tests
* rename functions in test_game
