dev-python/astropy-helpers: Add astropy-helpers package

Package-Manager: portage-2.2.11-r1
dev-python/ccdproc: Add ccdproc package

Package-Manager: portage-2.2.11-r1
dev-python/gammapy: Add gammapy package

Package-Manager: portage-2.2.11-r1
dev-python/imageutils: Add imageutils package

Package-Manager: portage-2.2.11-r1
dev-python/photutils: Add photutils package

Package-Manager: portage-2.2.11-r1
dev-python/specutils: Add specutils package

Package-Manager: portage-2.2.11-r1
Remove python2.6 from astropy affliated ebuilds
Merge pull request #251 from sargas/astropy_affliates

Add some Astropy-affliated packages