* Support multiple CSS paths
* Update a type to match docstring
* Ensure the demo app still works
* Use absolute paths in tests to (hopefully) appease Windows
* Notes about CSS changes in guide/docstrings, small grammar/typos fixes
* Move snapshot apps into snapshot_tests dir, improve messaging in snapshot output, add test for multiple css files interacting with classvar CSS
* Ensure consistent snapshot naming cross-platform
* Use rpartition instead of partition in import_app
* Fix handling of import_app when colon in arg
* Support paths containing Windows drive names in import_app
* Add note on new relative paths in snap_compare
* Update docs/guide/CSS.md
Co-authored-by: Will McGugan <willmcgugan@gmail.com>
* Fix formatting
* Update CHANGELOG to mention CSS_PATH supporting a list
Co-authored-by: Will McGugan <willmcgugan@gmail.com>
Because testing on Windows is going to add a drive to any absolute path, and
in the tests we don't want to make it specific to something like that, take
the absolute path to test against and then absolute it again which is pretty
much a NOP on a Unix-a-like, but will add the drive on Windows.
This improves coverage of _make_path_object_relative in _path.py, and
generally provides some simple tests of how CSS_PATH gets turned into a
css_path property of an App.
Note that if an actual CSS path gets added (something that has been mooted)
this will need updating.
