+ - Added Courier IMAP OUTBOX check to configtest utility.
+ - Moved login_form hook to its own table row on login page.
+ - Added check_plugin_version() function.
+ - If mailbox name starts with slash or contains ../, error message is
+ generated. Safety check for insecure default UW IMAP setup (#1557078).
+ - Ignore message copy errors when messages are deleted. Allows to delete
+ messages when quota is exceeded. (#614887) (#646386) (#1446026)
+ - Added filter_hook_function() hook type.