clean wcs tests
Spead up test_all_world2pix significantly with using only the image centre
adding back test
Rewrite Unit.__rmul__ and __rdiv__ to speed up array [*/] unit
Finish making cosmology member functions broadcast over redshifts.

  other functions that take single redshift inputs (lookback_time, age),
  and testing all the other ones work.
  dark energy model tests of broadcasting.
Update CHANGES.rst
Changed inline to __inline on msvc
Merge pull request #3195 from mdmueller/change-inline-msvc

Changed inline to __inline when building with MSVC
Merge pull request #3186 from bsipocz/wcs_speed_up_test

Speed up wcs test
Merge pull request #3194 from aconley/cosmo_broadcasting

Finish making cosmology member functions broadcast over redshifts.
Merge pull request #3191 from mhvk/unit-faster-q-init

Rewrite Unit.__rmul__ and __rdiv__ to speed up array [*/] unit
Added an overlooked contributor (Mihai Cara)