Updated XML
Add references for re-used code
Change the way the rewrite rule is created.
Repair and activate RSS
Add read and unread statuses. Re-order post creation and update to reduce database access
Don't reset status on update
Provide JS link and AJAX callback for toggling read status, for implementation in themes
Add menu to required features
Add menu links. Definitely needs more work later
Forget JSON, we don't need that here