set ArcBallController.minDistance to 1.0 by default
added the AbstractScriptController.updateRate property to customize the update frequency of the script
added an optional parameter to Geometry.cast(), the normal of the hit test.
fixed the hit normal computation on Geometry.cast()
Fix error when a mesh is removed and added to scene again
Merge remote-tracking branch 'origin/dev' into dev
fixed (probably) Bug #910 raycasting hit point is not correct