cpython

Fix compiler warning on Windows (GH-18012)

bpo-38630: Fix subprocess.Popen.send_signal() race condition (GH-16984)

bpo-1635741: Port _json extension module to multiphase initialization (PEP 489) (GH-17835)

bpo-39164: Fix compiler warning in PyErr_GetExcInfo() (GH-18010)

Fix AsyncMock base class in the docs (GH-18008)