Thanks to https://github.com/python/peps/pull/4705 there is now https://peps.python.org/release-schedule.ics We should point our users to it. GitHub pages does not support HTTP redirects, so we can: - [x] document the new location in readme - [x] copy the official ics instead of scraping HTML - [x] include deprecation notices in even descriptions - [ ] later: include deprecation notices in event names