collisionobject now has a precomputed centroid field
adding a quaternion constructor
moving collisioncallback to collisionobjectcollection
modifying collisioncallback delegate to include local/global  rays
updating delegates
adding drawbox and a toggle for non-buffer-clear runs
implementing DrawBox
adding Clear method to debugdraw
adding normal field to collisionobject
making public fields readonly
setting projectile destruction timer to 10s
implementing projectile deflection
implementing offset so that bullet reflections are performed at the surface of the hull
implementing sep buffer updating function
completing implementation of reflectors