Fixed missing function in stacking:
The img_props and fits_props were the same function, so I just replace the names
FellWalker and Clumpfind (Algorithm implementation) give errors with 3D cubes, but the fix was really simple, it wasn't pycupid fault.
Added verify("fix") to hduobject when loading fits, some fits give error parsing some keywords (i.e SKEW keyword gives error when trying to load dss1 fits files)
Added pycupid to setup.py dependencies, now when using python setup.py develop it will install pycupid.
python setup.py developit will install pycupid.