+ Added drupal_http_request().
+ Replaced rssfeeds with OPML feed subscription list.
+ Added support for pubDate.
+ Added support for conditional gets using ETag and Last-Modified.
To do this cleanly, I reorganised some bits of system.module: there is now a generic handler available for simple variable-get/set based configuration pages. Look at filter_admin() or system_view() for example usage.
(based on the patch by Goba)