it'd be nice if Lemmy had a wiki page for communities...
thank you, bot! Updated my post.
timely! Thanks for posting this here!
if you are on an instance that has upgraded to v0.18.1 (lemmy.world; lemm.ee; feddit.nl; etc.) and browse on widescreen/desktop you will want this version (for the updated UI):
https://github.com/soundjester/lemmy_monkey/raw/dev-v2.6-Lemmy-v0.18.1/old.reddit.compact.user.js
this would almost certainly require an extension, since you'd need some sort of persistent way to track "viewed" items. I don't think a userscript can do it.
Best bet will probably be Instance Assistant ([email protected] ), at some point in the future. Could always make a request directly, too since this would likely be a relatively popular feature.