v3.15.0b3
gh-134160: Split extension module init from PyModule docs; emphasize multi-phase init (GH-135126)
gh-134160: Use multi-phase init in documentation examples (#134296)
[3.15] gh-62480: De-personalize docs on using the C API (GH-151784) (#151936)
[3.15] Fix 2 broken links in documentation (GH-150892)
gh-134160: Start "Extending and embedding" with a Diataxis-style tutorial (GH-142314)
gh-134786: raise error if `Py_TPFLAGS_MANAGED_WEAKREF` or `Py_TPFLAGS_MANAGED_DICT` is used without `Py_TPFLAGS_HAVE_GC` set (#135863)
Docs: remove unneeded author attributions (#145002)