Colorize `pytest` output
`pytest` is now explicitly told to colorize its output. This also
applies to the CI tests on GitHub.
@@ -33,7 +33,7 @@ astropy_header = true
text_file_format = rst
xfail_strict = true
remote_data_strict = true
-addopts = --doctest-rst
+addopts = --color=yes --doctest-rst
filterwarnings =
error
## These are temporary measures, all of these should be fixed:
