Fix checksum tests on 32-bit systems.
Remove unnecessary np.array()
Change order of arguments for `wcs.compare`.
Fix function signature in docs.
Fix #2514: Fix warning message when config option moved to top-level.
Add changes entry.
Fix io.ascii common function assert_almost_equal, was doing nothing
Fix mistake in tests revealed by previous commit
Don't import IPython
Merge pull request #2484 from mdboom/fits/checksum-failures-32-bit

Fix checksum tests on 32-bit systems.
Merge pull request #2514 from mdboom/config/warning-message-to-toplevel

Error in configuration deprecation warning
Merge pull request #2505 from mdboom/wcs/compare-argument-order

Change order of arguments for `wcs.compare`.
Merge pull request #2541 from mdboom/misc/dont-import-ipython

Don't import IPython
Merge pull request #2522 from taldcroft/ascii-all-close

implements assert_almost_equals in ascii