Built and tested in 1D the new step scan configuration and controller.  Tested it with VESPERSSpatialLineScanConfiguration and it appears to work.  Next up, 2D.
Added the functionality for doing higher dimensional scans with the step scan controller.  Not fully tested yet.
Built an EXAFS scan axis region and did most of the work to build a new assembler for the EXAFS scan controller.  It's not quite done yet and needs the extended region built properly.  I also changed the step scan controller to have a virtual method that creates the scan assembler that can be re-implemented in subclasses if a more specific scan assembler is required.