Ensure correct array dtype in centroid_com
Add docs for gaussian1d_moments
Add test for gaussian1d_moments
More morphology improvements
Fix image mask bug in centroid
Added morphology tests for image masks
Add segment_photometry
Update segment_photometry docs
Allow label subset for segment_photometry
Change index to labels and make flux nan for invalid labels
Implement error, gain, and mask options in segment_photometry
Implement background option in segment_photometry