changelog
    
    
    - Sat, 04 Feb 2017 14:44:39 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Sat, 04 Feb 2017 14:44:39 +0200] rev 1091
 
    - Wrote documentation to the Model class.
 
    - Sat, 04 Feb 2017 14:24:16 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Sat, 04 Feb 2017 14:24:16 +0200] rev 1090
 
    - The current document pointer may no longer be null.
 
    - Fri, 03 Feb 2017 10:51:08 +0200
 
    - by Teemu Piippo <teemu@compsta2.com> [Fri, 03 Feb 2017 10:51:08 +0200] rev 1089
 
    - minor amendment
 
    - Fri, 03 Feb 2017 10:44:23 +0200
 
    - by Teemu Piippo <teemu@compsta2.com> [Fri, 03 Feb 2017 10:44:23 +0200] rev 1088
 
    - Reworked and cleaned up the circle mode
 
    - Mon, 30 Jan 2017 14:30:55 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Mon, 30 Jan 2017 14:30:55 +0200] rev 1087
 
    - Some code cleanup in abstract editing modes.
 
    - Mon, 30 Jan 2017 02:41:45 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Mon, 30 Jan 2017 02:41:45 +0200] rev 1086
 
    - Removed some unnecessary #include-directives.
 
    - Mon, 30 Jan 2017 02:33:17 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Mon, 30 Jan 2017 02:33:17 +0200] rev 1085
 
    - Removed the status bar, since it's not used for anything