changelog
    
    
    - Thu, 09 Feb 2017 19:32:41 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 09 Feb 2017 19:32:41 +0200] rev 1109
 
    - Made GLRenderer's Model pointer const
 
    - Thu, 09 Feb 2017 13:26:44 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 09 Feb 2017 13:26:44 +0200] rev 1108
 
    - Moved more editing-related methods to Canvas.
 
    - Thu, 09 Feb 2017 13:17:22 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 09 Feb 2017 13:17:22 +0200] rev 1107
 
    - Removed the unneeded makeCurrent overload
 
    - Thu, 09 Feb 2017 13:13:46 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 09 Feb 2017 13:13:46 +0200] rev 1106
 
    - Moved more methods only used by canvas code from GLRenderer to Canvas. Thin border pen is now a static constant.
 
    - Thu, 09 Feb 2017 13:07:47 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 09 Feb 2017 13:07:47 +0200] rev 1105
 
    - Moved triangle count rendering to Canvas
 
    - Thu, 09 Feb 2017 13:05:31 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 09 Feb 2017 13:05:31 +0200] rev 1104
 
    - Moved document editing methods from GLRenderer to Canvas
 
    - Thu, 09 Feb 2017 11:53:55 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 09 Feb 2017 11:53:55 +0200] rev 1103
 
    - Created a new GLRenderer derivative class "Canvas" and made MainWindow use it