[x3d-public] containerField updates pushed for X3D 4.0 XML Schema, DTD and X3DUOM: ParticleSystem, all tests run cleanly

[Don Brutzman]

These improvements and X3D v4.0 support are now included in X3D Validator.

	X3D Validator comprehensively checks X3D model validity. 	
	https://savage.nps.edu/X3dValidator

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