+2005-10-09:
+
+ The "attachments" and "unattachments" commands were added. The %X
+ expando has been added to $index_format. The ~X pattern has been
+ added. The %Q and %X expandos have been added to $attach_format.
+
+ As part of the above addition(s), the 'A' message status flag has been
+ removed again.
+
+2005-10-07:
+
+ When upgrading to after a revision after 528, header caches must be
+ completely removed and rebuild again. From r540 on, this problem is
+ solved so manual interaction will not be necessary any longer.
+