CorrelationView: Every now and then compute actual time, not just estimate it
Datum.cc: Make more robust to strange input datums
Cartography: Functions to read/write string to GeoTiff header
Pass to gdal predictor depending on channel type
DiskImageResourceGDAL.cc: Allow the user to override predictor from outside
Docs: Cleaned up Doxygen warning messages.
Docs: Improved Doxygen documentation
Merge branch 'master' of https://github.com/ScottMcMichael/visionworkbench