Seconds per move

Still missing SAN parsing (that will be rather extensive) and error in keeping track of captures for stepping backwards. This may be in part due to having taken a toy and tacking on to it. Keeping track of state wasn't as important before. At this point, wondering if I shouldn't have the board keep better track of where all the pieces are... If comments are used, assumption is each move will start on a new line. Attempts to make your own moves during playback may lead to unpredictable results. It might be interesting to try to weave those into the game later. Chess notation being semi annoying to parse, right now spaces in moves are disallowed (e2-e4 not e2 - e4) and only one space between white and black move. Need to consider making a better parser.