2.2.0
Add white border to banner in README to be visible in dark mode
Add alternate 'dark mode' banner to documentation
Add documentation for Emscripten support
Make Travis CI fail if docs have warnings or errors
Fix a link to "absolute URI" definition (#3128)
Generate changelog with towncrier
Link to fundraiser in docs banner
Add test-pypy 3.8 3.9 3.10 nox sessions (#3304)
Release 2.0.0-alpha1
Importing Sphinx docs.
Remove Sphinx version pin
Remove outdated sponsorship tiers
Merge pull request from GHSA-v845-jxx5-vc9f
Allow non-OpenSSL TLS libaries with a warning