[Feature Request] Bounding box's position changing with block orientation.

[ZeroLevels]

For orientable (any of them) blocks, if you set a bounding/selection/collision box, it would be cool if the box's position was oriented with the block's orientation.

[cubex2]

I'm planning on allowing block properties to change depending on the complete block state instead of just the subtype, so this will definitely a part of it.