20050210:
---------
        * Position in screen now stored so that xfcalendar stays where 
          it was put.
        * More paramaters added: Visibility in Systray, Pager and 
          Taskbar now configurable from standard parameter screen. 
          Also xfcalendar visibility when it is started from shell 
          first time can be configured either visible or hidden.
20030716:
---------
	* XfceTrayIcon now both provides "clicked" (a single left button
	  click) and "double_clicked" (double left button click) signals
  	* XfceTrayIcon no longer autoconnects, you'll need to call
	  xfce_tray_icon_connect() explicitly