2.23.6

 * Remove unused command line switches
 * Update and ship a man page
 * Remove dependency on libgnomecanvas
 * New Tango icon (thanks to Andreas Nilsson, Michael Monreal
   and Sebastian Kraft).
 * Add a context menu to copy the bug URL when a bug has been reported.
 * Add a dialog to warn the user to review the crash description if it is
   too short (thanks to Diego Escalante Urrelo).
 * Many cleanups of the source tree.
 * Some other misc bug fixes
 * Translation updates