Release 1.4.1

[bgilbert]

OpenSlide Python release process

• [x] Update CHANGELOG.md and version in openslide/_version.py
• [x] Create and push signed tag
• [x] Find the workflow run for the tag
  • [x] Once the build finishes, approve deployment to PyPI
  • [x] Download the docs artifact
• [x] Verify that the workflow created a PyPI release with a description, source tarball, and wheels
• [x] Verify that the workflow created a GitHub release with release notes, source tarballs, and wheels
• [x] cd into website checkout; rm -r api/python && unzip /path/to/downloaded/openslide-python-docs.zip && mv openslide-python-docs-* api/python
• [x] Update website: _data/releases.yaml, _includes/news.md
• [x] Start a CI build of the demo site
• [x] Update Ubuntu PPA
• [x] Update Fedora and possibly EPEL packages
• [x] Check that Copr package built successfully
• [ ] Send mail to -announce and -users
• [ ] Post to forum.image.sc
• [x] Update MacPorts package