Feeds automatically refresh after an hour. It's still possible to refresh manually from the menu.
It's now possible to change the read/favorite status from the article list.
To add a feed, either use the browser to follow a link to an atom/rss feed, or if that doesn't work, copy the feed link, open Weader, open the menu and select "Add Feed" and then paste the link into the dialog.
Feeds can be deleted with a long press on the feed in the list of feeds and then "Delete".