2.2.1

• Enable mypy to discover type hints as specified in PEP 561 (#933)
• [ci] Set the expected Python version when building release files
• [ci] Update actions versions in use
• [watchmedo] [regression] Fix usage of missing signal.SIGHUP attribute on non-Unix OSes (#935)

💟 Thanks to our beloved contributors: @BoboTiG, @simon04, @piotrpdev