v3.22.0

✨ New Features

• b6391a1 - Use fonts from xml2rfc-fonts (PR #1124 by @kesara)
  • ↘️ addresses issue #1030 opened by @kesara
  • ↘️ addresses issue #1121 opened by @kesara
• 14cf536 - Remove dependency on six (PR #1134 by @kesara)
  • ↘️ addresses issue #1130 opened by @kesara

🐛 Bug Fixes

• 7a30635 - Use correct list style for upper case roman (PR #1123 by @kesara)
  • ↘️ fixes issue #1122 opened by @cabo

👷 Build System

• a768f39 - Update CodeQL Action to v2 (PR #1132 by @kesara)

📝 Documentation Changes

• 01661ae - update CHANGELOG.md + py file versions for v3.21.0 [skip ci] (commit by @kesara)