Adding short_name and description to manifest.
Adding a 'force check now' button to the options page.  Very nice for debugging and I'm sure users will appreciate it too, from time to time.
Changing default last_page_read to the first page of Homestuck, instead of the latest.  The assumption is now that users are reading through the story, rather than keeping up-to-date with it.
Adding a context menu to MSPA pages allowing the user to mark their current page as their "Last Read" page.
Now tracking your *actual* position in Homestuck by monitoring the pages you visit. Woo!
Fixing bug where context menu item was not available if you happen to right-click on an image or link.
Implementing special 'gigapause over' notification upon the first update following the gigapause. :)