Added proper class hierarchy.  Added ability to jump and double jump.
Added kings.  Added Submit button, and general flow of a game.  Game is
in a playable condition now.
Merge branch 'adil-development' of https://github.com/hussaino/boardgames into josh-development
Added Chess piece classes, moves, and the chess board.  Needs to add
rules for check, check mate, and special movement.
Merge branch 'josh-development'
Merge branch 'josh-development' of https://github.com/hussaino/boardgames into josh-development
Reviewed Chess game.
Implemented check.
Partially implemented checkmate.
Multiple bugs were fixed.
Implemented higher level of abstraction.

Teammates working on this commit: Hussain, Josh.
Group meeting was attended by: Hussain, Josh, Justin, Adil.
Added castling, En passant, and Pawn promotion
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