Followup to #216 for GaussianPSF amplitude
Update tests for GaussianPSF amplitude
Fixing missing coordinate unit in aperture_photometry return for single positions
Merge pull request #213 from bsipocz/aperture_fix_unit_single_position

Fixing missing coordinate unit in aperture_photometry return table
Update imageutils based on astropy version
Update detection to use new imageutils
Update nddata.utils examples
Update imageutils imports
Remove fits2bitmap script
Adapted psf.py to new array utils api
Fix imageutils imports
Changed name to sigma_clipped_stats
Fix imageutils visualization imports
Merge pull request #218 from larrybradley/psf-amplitude

Followup to #216 for GaussianPSF amplitude
Fix imports in imageutils
Merge pull request #219 from larrybradley/imageutils

Update imageutils in extern
Fix SkyEllipticalAperture's theta
Adding more tests for the SkyAperture classes
Removing TODO comments
Adding hdu return option to make_4gaussinas_image