As a user I should be able to start a game
Implementing start game timer command to calculate the timer of the game
As a user I should be able to stop a game
Implementing stop game timer command to stop the timer of the game when
the game is stopped
As a user I should be able to pause a game
Implementing pause game timer command to stop the timer of the game when
the game is stopped


Code reviewer:
Ines Baina
Merge branch 'master' of https://github.com/pysudoku/sudoku.git

Conflicts:
	src/sudoku/game/Game.py
	src/sudoku/model/sudokutable.py
	src/unitTests/test_suite.py