changelog
    
    
    - 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