update openfoam reader to improve zone support, bugfixes etc.
Convert volume fields onto cellZones and faceZones while reading the field file. Previously, the cellZone data were "bolted on" as an afterthought. The implementation simply copied the relevant items from the volume mesh. This seems ok, except if you wish to only view a subsection of your mesh (eg, for the near field region of an aero case). You needed to load the entire mesh and then use extract block to reduce to the zone of interest. There was no support for fields on faceZones.
some cross-referenced issues: