Next GeoMason pre-release committed to repositoryHighlights:

   - Heavily refactored importers:
      - ArcInfoASCGridImporter supports compressed streams (see Sleuth
      demo); should also have some performance improvement
      - other importers now use URL instead of String; demos updated
      - made importers static classes, so no longer necessary to
      instantiate them
      - ShapeFileImporter now has more convenience member functions
      - Compressed repository large demo data files, no 83Mb instead of