ZENGINE: Add newlines to console debug statements
ZENGINE: Allow MouseEvents to be unregistered
ZENGINE: Make MousEvent fully public
ZENGINE: Reset MouseEvent globalStateValue's when clearing them
ZENGINE: Convert _activeControls from a List to a HashMap
ZENGINE: Allow controls to be enabled or disabled
ZENGINE: Implement ActionEnableControl and ActionDisableControl
ZENGINE: Allow Puzzles to have mutiple 'sets' of CriteriaEntries
ZENGINE: Convert _puzzlesToCheck to a Queue instead of a Stack
ZENGINE: Force & operator to have precedence over == operator
ZENGINE: Reimplement PushToggleControl