- Als obsolete claws-mail-extra-plugins-devel, as the plugins
package was merged upstream.

- Update to version 3.9.1:
+ All plugins previously packaged as 'Extra Plugins' are now
contained within the Claws Mail package. In addition to that,
the following plugins have been dropped: TrayIcon, Dillo
Viewer, and Gtkhtml2 Viewer.
+ 3 command-line switches have been added:
--cancel-receiving which cancels the currently running message
retrieval operation.
--cancel-sending which cancels the currently running message
sending operation.
--debug which toggles debug output.
+ '/Message/Cancel sending' has been added to the main menu.
+ In the filtering and processing condition configuration for
Age, it is now possible to match based on number of hours.
+ The GnuPG signature timestamp is now displayed in the full
signature information.
+ Support for GnuTLS priority string has been added.
+ Keep-alive pings are now performed on IMAP and NNTP
connections.
+ In the Compose window, the focus is now moved to the message
body when focus is in the Subject entry and the Enter key is
pressed.
+ The Delete key can now be used to remove Colour Label hotkeys.
+ PDF Viewer: The printed PDF quality has been improved.
+ Fancy HTML viewer: The options dialogue has been completely
reworked, and disabling remote content is now totally strict.
+ Python plugin: Added Cc field to messageinfo objects.