* Remove string types other than UTF-8.
* Exclude the API from the limited C API.
* Remove the explicit preconfiguration.
* Remove the rationale about the limited C API / stable ABI.
* PEP 741: Add sys.get_config_names()
* Add sys.get_config_names() function.
* Add PyInitConfig_HasOption() function.
* Remove Py_ExitWithInitConfig() function.
* Add "Fully remove the preinitialization" section.
* Mention when the caller must hold the GIL.
* Add example increasing an initialization configuration option.
* "Usage of the stable ABI" section: add more quotes.
* Document that options side effects are not taken in
account by PyInitConfig_Set*() functions.
* Add "Spawnw process" section.
* Add Cython rationale.
* Add myself as PEP 741 code owner.