v0.03:
      + some code cleanup
      + fixed a bug where some illegal moves were allowed
      + handles input more gracefully
      + added a function to read in a board from a file to
	aid in debugging.

v0.02:	
      + forces a "gameover" when neither party can move.
      + prints out the score at the end of the game.
	
v0.01:
      + first release!