Attrib Shape qL SOP: added VDB volume mode
FIXED: Attrib Shape volume resolution wasn't working in VDB mode (+vol resolution indicator)
Attrib Builder SOP: multiple inputs support (experimental)
Attr Visualizer SOP: pscale bug fix
Rest Position qL SOP: descriptive parm upper case
Added descriptive parms; fixed vector example scene
minor changes: Shot qL OBJ, Point Topology qL SOP, Bounds qL SOP
NEW: Attrib Range Query qL SOP (for determining min/max values of a geometry attribute)
Merge pull request #20 from johnnyquest/dev

new: Attrib Range Query changed: Attrib Shape (VDB mode), Attrib Builder, Attr Visualizer, Point Topology, Bounds