Log Message:
py-tinycss2: updated to 1.1.0

Version 1.1.0

Drop support of Python 3.5, add support of Python 3.9.
Fix ResourceWarning in tests.
Use Python standard library’s HSL to RGB converter.
Use GitHub Actions for tests.
New code structure, new packaging, new documentation.

Version 1.0.2

Don’t crash when indent tokens have no lowercase equivalent name.

Version 1.0.1

Fix tests launched by CI.
Parse “–” ident tokens correctly.

Version 1.0.0

Drop Python 2.7, 3.3 and 3.4 support.
Allow leading double dash syntax for ident tokens, allowing CSS variables to be \ 
parsed correctly.
Test with PyPy3.
Force tests to parse JSON files as UTF-8.
Clean packaging.