Developments:
-Only need to click once now for jump-chaining
-Fixed Piece addMove to be private

Todo:
-[GUI]Fix GridWorld menus for Checkers
-[GUI]Get Checkerboard background and piece pictures
-[GUI]Have start-of-game options (not necessary)
-[NET]Networking
-[PROJ]JUnit Tests
-[PROJ]PPT Presentation