https://github.com/phetsims/sun/issues/204 thumbTouchAreaExpandX -> thumbTouchAreaXDilation thumbTouchAreaExpandY -> thumbTouchAreaYDilation
https://github.com/phetsims/sun/issues/204
thumbTouchAreaExpandX -> thumbTouchAreaXDilation
thumbTouchAreaExpandY -> thumbTouchAreaYDilation

phetsims/scenery-phet,phetsims/scenery-phet,phetsims/scenery-phet