3.9
[3.9] [docs] Improve the markup of powers (GH-28598) (GH-28608)
bpo-35506: Remove redundant and incorrect links from keywords. (GH-11174)
bpo-33641: Convert RFC references into links. (GH-7103)
gh-87670: Add web.archive redirects from effbot (GH-92816)
Docs: FIX broken links. (GH-13491)
[3.9] bpo-40204: Allow pre-Sphinx 3 syntax in the doc (GH-21844) (GH-21901)
bpo-38600: NULL -> ``NULL``. (GH-17001)
[3.9] bpo-42967: only use '&' as a query string separator (GH-24297) (#24528)
bpo-31415: importtime was made by Inada Naoki (GH-31875)
gh-83728: Add hmac.new default parameter deprecation (GH-91939) (GH-93546)
Reword 3.9.23 notable changes to reflect status of backports
Include additional changes to support blurbified NEWS (#3340)
Add 3.9 whatsnew file (GH-14040)