3.9
Issue #18093: Factor out the programs that embed the runtime
bpo-38304: PyConfig_InitPythonConfig() cannot fail anymore (GH-16509)
bpo-40413: test_embed tests calling Py_RunMain() multiple times (GH-28466) (GH-28471)
bpo-40268: Remove unused imports in pylifecycle.c (GH-19533)