Work Completed (12/11/14)

The Back-and-Forth Tile is alive an functioning after one day's work. There are some wrinkles that need to be ironed out and I should probably add documentation to the manual.

Although the functionality of the Back-and-Forth Tile is fairly simple, there was SO much that had to be done in so many classes. It makes me wonder what I could do to make the code more robust so that adding a feature doesn't require adjustments in a million different classes.