A small feature list

A few features I'd like to see:
Next/Prev Unread (key bindings +/-), different from j/k which goes to
next/prev whether it's read or not.
Hide/Unhide Feed - The feed supplying the selected article is hidden
from the article list
Mark Article Read/Unread - Not just starred.
Mark Feed Read/Unread - mark the entire feed as read

Sorting options for the feed list would be nice. Searching
capabilities would also be nice - search my read articles, search my
starred articles, search new articles.