enclosure_tags improvements (rewrite tags on the fly, set genre for podcasts). Fix entry_dedupe flip-flop bug. Support Python 3.13. Update vendored feedparser. See changelog for details.

Allow different feed update intervals. Fix assertion failure for duplicate entry ids. Allow re-running mark_as_read plugin. See changelog for details.

Split the full-text search index into a separate, attached database. Add new change tracking internal API. See changelog for details.

Filter entries by entry tags. Support Python 3.12. See changelog for details.

Document the storage internal APIs (plus storage API clean-up). Stop using deprecated sqlite3 datetime converters/adapters. See changelog for details.

Wrap unexpected retriever/parser errors in ParseError instead of letting them bubble up, so exceptions raised by custom retrievers/parsers for one feed don't prevent updates for others. Add the timer experimental plugin. See changelog for details.

Drop Python 3.9 support. Use concurrent.futures instead of multiprocessing.dummy. Wrap unexpected hook errors in UpdateHookError instead of letting them bubble up, so plugin-raised exceptions for one feed don't prevent updates for others. Add an Exception hierarchy diagram. Make reader._parser a package and rework lazy imports. See changelog for details.

Attention: This is the last release to support Python 3.9. Add support for PyPy 3.10. Remove the twitter and tumblr_gdpr experimental plugins. See changelog for details.

Add contributor docs. Deprecate the Twitter plugin. See changelog for details.

Entry.important becomes optional (bool or None). See changelog for details.