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Added:
Read/unread state is now also shown by coloured dot in article list, inspired by similar feature of QuiteRSS. The behavior is switchable in settings. (#948)
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Feed reader which supports RSS/ATOM/JSON and many web-based feed services.
This has nothing to do with RSS Guard. The link does not work in general. Https://lemmy.ml/feeds/u/dessalines.xml?sort=New, for example, does work. There seems to be something wrong with lemmy.ml. The administrators have to take care of that.