[x3d-public] CollisionCollection implement X3DBoundedObject node

[Don Brutzman]

[Something we didn't cover in last two meetings]

Note that CollisionCollection contains multiple X3DBoundedObject nodes, so it needs to be an X3DBoundedObject as well.

This is tracked as follows:
* Mantis 1275: CollisionCollection implement X3DBoundedObject node
   https://www.web3d.org/member-only/mantis/view.php?id=1275

Reference:
* 37.4.4 CollisionCollection
   https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/rigid_physics.html#CollisionCollection

Similar:
* 27.4.9 NurbsSet
* NurbsSet : X3DChildNode, X3DBoundedObject
   https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/nurbs.html#NurbsSet

Governing:
* 10.3.1 X3DBoundedObject
   https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/group.html#X3DBoundedObject

Hoping it is an easy "why yes of course" so that the change can be applied.  Thanks for all feedback.

all the best, Don
-- 
Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman