Avoid a NameError exception in case of multiple wcses
Regression test for issue #2053
Mention bugfix for issue #2053 in CHANGES.rst
Avoid NameError using try-except block
Update CHANGES.rst to include "or the wcslint script" for bug #2053
Fix #2062: Fix reporting of more than one WCS per HDU.
Add CHANGES entry.
Merge pull request #1 from mdboom/wcs/display-alt-correctly

Display 'alt' correctly in wcslint
Fixed a silly typo in a comment
Merge pull request #2053 from barentsen/bugfix-for-wcs-validate

wcslint and wcs.validate raise an unexpected NameError exception