v3.15.0b4
[3.15] gh-133510: Add links to more info for the match statement in FAQ anwser (GH-133511) (#152656)
gh-133678: Document C API third party tools (#134526)
GH-139436: Remove references to downloadable PDF documentation (#140416)
Resolve reference warnings in faq/gui.rst (#108147)
Improve FAQ link in documentation (for issue #16435).
bpo-41203: Replace Mac OS X and OS X with macOS (GH-28515)
gh-121905: Consistently use "floating-point" instead of "floating point" (GH-121907)
gh-149083: Change several other docs examples to use `sentinel()` (#149213)
doc: Formatting and typo fixes (#98974)