Add scene filter for data points
Merge branch 'master' into fit-selection
Add scene filters for selection modes
Merge branch 'fit-selection' into fit-dev
Add scene filters for selection modes
Merge branch 'master' of github-gram003:gram003/ZincPythonUtilities into fit-dev
Add selection for data, nodes and faces
Refactor mesh module functions to work with a Nodeset or Mesh

This also allows you to pass a MeshGroup or NodesetGroup so that the
created mesh gets put in that group.
Add region parameter to undo methods
Add Mesh or Nodeset parameter to creation routines

These now take a Mesh or Nodeset instead of Context and Region
Remove Context as a parameter
Add subGroupField optional argument
Add bounding box mesh
Remove Context from parameters
Add point size variable
Update graphics creation
Use the mesh dimension in the problem file
Add pointsize variable
Add observable region
Add selection notifier, doesn't work