The primary author is Morioka Tomohiko. If you don't set faces with X resources, you can speed up the initialization of new faces by setting this to nil. Keybindings have been synced with FSF Emacs, there are more menus and items in menus are sometimes grouped differently. Any personnal customization to dired will probably have to be checked. Most packages have been updated to the latest available versions.
Groups can inherit group parameters from parent topics.
Scoring can be performed using a regexp on the Date header. The Date is normalized to compact ISO 8601 format first. Groups inside topics can now be sorted using the standard sorting functions, and each topic can be sorted independently. Subsets of the groups can be sorted independently. Score files are now applied in a more reliable order.