Changed _lastPlayer to _currentPlayer in board.py. Removed _lastMove.
Change pieceOwnedBy() to pieceOwner()
Added constants.py
Merge branch 'master' of github.com:jladdjr/monopoly into jim-solution

Conflicts:
	board.py
Added constants for game piece symbols. Tweaked tests.
Merge branch 'master' of github.com:jladdjr/monopoly into jim-solution

Conflicts:
	test.py