[feature] Atom feeds

[153]

Atom feeds for newest threads in a board / newest comments in a board, + for the entire site would make moderation a bit easier. Spam attacks etc can be quickly detected by sharing Atom feeds to IRC or Pleroma, and Atom feed readers offer an interesting view of the board. Kareha, 4chan, Tinyboard, Multichan, etc etc have at least the "recent threads" or "bump order" views as feeds.