REL-2057: Deal with cases where existing ROIs are invalidated by changing for example the detector.
REL-2057: Detect invalid ROIs before insertion and don't allow them to be inserted.
Merge pull request #76 from fnussber/feature/REL-2057

REL-2057: ROI Exception
REL-2080: Update GMOS Hamamatsu readout overheads.
Merge pull request #78 from fnussber/feature/REL-2080

REL-2080: Update GMOS Hamamatsu readout overheads.
REL-2054: added missing .fits files needed by mascot algorithm
REL-2054: set position angle for selected asterism
REL-2054: good citizenship