remove static identifier, rename method
remove field userInterface from class SnakeGame
refactor SnakeGameTest
turn FoodGraphicTest into unit test
remove unused field
remove class TypedJComponent
refactor
make method static, remove unnecessary paint call
add test for snakes initial length
split class SnakeGame into SnakeGame and ApplicationBoundary
add forgotten new files
rename packages, add applicationBoundary package
move test in test folder
move production class into folder main
add test for location after movement to the rigth