Turns more or less implemented, mainly with the turnover method. The
ACTIVE indicators and the titles on the PlayerPanes have been automated
in the turn sequence.

When setting the ACTIVE indicator for Player 1 on prior to the game
start, a stack overflow once more appeared when I attempted to place a
call to the gui in the Engine constructor. Repositioned assignment into
each of the response methods in the Engine. Repetetive; if issue is ever
solved, should come back.
***NOTE FOR FUTURE REFERENCE***