CHANGE: Reorganization of TouchGestureManager for SAGE related testing
FIX: TouchGroup up event now uses the correct last position
NEW: Tracking of idle/active touch state
NEW: TouchGroup handedness
CHANGE: Button 8,9 flag assignments
FIX: Five-finger hold gesture, single touch gesture flag
FIX: TouchGroup touchList no longer contains a -1 ID touch
NEW: Big touch gesture
FIX: TouchGestureManager now handles touch size
NEW: TouchGestureManager basic zoom gesture
NEW: TouchGestureManager - Click, double click, and three-finger gestures
FIX: TouchGroup width/height for single touch gestures
FIX: Double click gesture cleanup
CHANGE: Re-enabled head tracking for SoundManager
Merge branch 'master' of https://github.com/uic-evl/omicron into TouchGestureManagerTest