cpython

Include subsections in TOC for PDF version of docs. (GH-9629)

bpo-39674: Revert "bpo-25988: Do not expose abstract collection classes in the collections module. (GH-10596)" (GH-18545)

bpo-37207: Use vectorcall for range() (GH-18464)

bpo-36347: stop using RESTRICTED constants (GH-12684)

bpo-1635741: Port _bz2 extension module to multiphase initialization(PEP 489) (GH-18050)