nkanaev/yarr v2.1

on GitHub

- (new) configuration via env variables
- (fix) missing `content-type` headers (thanks to @verahawk for the report)
- (fix) handle opml files not following the spec (thanks to @huangnauh for the report)
- (fix) pagination in unread/starred feeds (thanks to @Farow for the report)
- (fix) handling feeds with non-utf8 encodings (thanks to @fserb for the report)
- (fix) errors caused by empty feeds (thanks to @decke)
- (fix) recognize all audio mime types as podcasts (thanks to @krkk)
- (fix) ui tweaks (thanks to @Farow)