Version step

0.2 Alpha
Menu Screen added

With a whole lot of menu functionality. Woo!
Also, global vars and settings moved to a new module
MINOR: added validMine function

Function to check whether a mine is in a valid location added
Will help things out when false positives come around
Silent make and clean

Some minor changes to the release script
Changed Exit buttong action

Now only get back to the main menu, not exit the game