Rename bge_Position to bge_Translation
bge_Translation/Rotation/Scale now attributes
Pawn: Minor fixes
Cube: Fix crash (likely buffer not created)
Add bge_Model attribute, replaces other attribs
Node: Rename PositionBuffer->ModelMatrixBuffer
Node: Minor tweaks to code
Node/Pawn: Now abstract. Removing Draw methods
Add Crowd class
Node: SetPosition returns Position as constref