Source/Turn.m
2008-07-14 Tweaks and fixes, including renaming Game's "board" property/ivar to "table", which is less confusing.
2008-07-09 More tweaks, including a "reversed" property for Grids to show the second player's perspective without turning the pieces upside-down.
2008-07-03 Lots of reworking. Completed support for game history, including Turn class. Changed Game API around quite a bit.