Summarized Changelog:
- TT-RSS: Fix another issue with unexpected types being returned by the API
- Fix copy feed URL in Bazqux, FeedHQ, InoReader and TT-RSS.
- Improve error messages when failing to add a feed in the local and DecSync plugins.
- Auto-fill missing URI scheme when adding feeds and in the TT-RSS setup.
- Use dc:creator tag for authors in local and DecSync RSS feeds.
- TT-RSS: Handle the API sending us ints as strings and strings as ints.
- TT-RSS: Make the api_feedreader plugin use PDO prepared statements instead of doing string escaping.
- TT-RSS: Redact passwords in API logging.
- TT-RSS: Various other improvements to make the plugin more maintainable.