Additional Modifications to the original Othello GA

• Two new terminals were added--white_adjacent_empty and black_adjacent_empty, which measure the number of white and black pieces, respectively, which have an adjacent empty square. The evaluation function was extended to calculate the values of these two terminals for a given board state.
• The Othello player and tester classes were modified to allow the player to play as either color using a given function tree (by flipping the meaning of black and white). This was necessary for tournament play.
• Tournament play was implemented by overriding the calculateStatistics() method to conduct the tournament. In each round, the population was sequentially scanned (alternating between forwards and backwards scans) for "live" individuals, with each pair of "live" individuals playing a game.
• The OthelloCache program was extended to allow sets of players to be paired off against one another and against the random player and Edgar (used to evaluate the resulting players from the GA runs).