initial repackaging of aberrations into a single array
allow OpticalPSF users to pass in array/tuple/list of aberrations
amusing typo
more dox
braindead default args issue
specify aberrations as a list in demo7
make comment match code
put optical PSF changes into CHANGELOG
new unit test for aberrations kwarg
make index in aberrations array correspond to index in Noll convention
Add aberrations option to config version of OpticalPSF
(#409)
Test both numpy array and regular list for aberrations keyword
(#409)
Allow len(aberrations) < 12, but > 4
(#409)
typo
Merge branch 'master' into #409

Conflicts:
	CHANGELOG.md
	galsim/optics.py
Merge pull request #494 from GalSim-developers/#409

#409 - slight OpticalPSF restructuring