What is the best place to report things or ask for improvements? The github?

For example I notice spammers in groupchata which are hidden and marked as spam if I visit their profile but not before and this also does not seem to be stored.

So the rooms remain spam filled unless I open their profiles. It would be nice if it checks for this in the background and caches it.

Theres multiple things like that such as my desire for a refresh / scroll up button for the feed and a desire that it bundles posts together if its multiple posts in a row from one account. I follow quite a busy one and having that grouped but expandable would give me a nice balance from being able to see its posts by expanding it while also seeing everyone else.