-further progress on csg refactoring:
* modified the CSGBase.transform method to alter the current object & return it, instead of returning a new one
* this will very likely done for all boolean operations aswell (making substractSelf, unionSelf etc redundant)..discussion is still in progress on all of this
* started transfering the modified parameters used for 3d solids in the csg.sugar layer directly into the new solid classes themselves
* for now partially done for all but roundedCube & rounded Cylinder
* fixed some bugs and cleaned up transform operations
* fixed Matrix4x4 export issue