Implementation of Othello/Reversi for use in game programming
or board game AI research.

If you plan on using this, you probably want to make your own
rate(board) method for the AIPlayer class, and then simply use
something like result(AIPlayer(rate), RandomPlayer()) to retrieve
the result of a game.

If you want to use the board state as input to some algorithm, the
method Board.to_list() may come in handy.

Overview:

Classes
	Board
		Class representing board state, able to generate successor board
		states.
	ConsolePlayer
		Prompts the user for moves.
	RandomPlayer
		Chooses a random move.
	AIPlayer
		Uses a rating function to choose moves.

Utilities
	game(A, B, board_size)
		An iterable yielding the states of a game between A and B on a
		board of size board_size
	result(A, B, board_size)
		Convenience method yielding the final board state of a game 
		between A and B on a board of size board_size