Muselet improved for extended sources
Numerous changes to muselet.
Improved treatment of extended sources:
- expand image sizes, as needed
- returns sextractor segmentation mask
Each narrow band now uses a corresponding weight map, not a global one.
More robust cleaning of false detections outside FoV.
Changes to merging algorithms. Results in slightly more objects (i.e. more fragmentation, not necessarily more detections)
Fixed "too many files open error" (I hope)
Merged "cont" and "sing" catalogs into one "object" catalog
Performance also improved via multiprocessing (but disabled by default)