changelog
    
    
    - Sat, 08 Apr 2023 21:48:49 +0300
 
    - by Teemu Piippo <teemu.s.piippo@gmail.com> [Sat, 08 Apr 2023 21:48:49 +0300] rev 356
 
    - Made editor font configurable
Add grid matrix editor 
    - Sat, 08 Apr 2023 16:59:55 +0300
 
    - by Teemu Piippo <teemu.s.piippo@gmail.com> [Sat, 08 Apr 2023 16:59:55 +0300] rev 355
 
    - Move the about dialog to MainWindow. The hack to retrieve GL extensions is made a bit cleaner
 
    - Sat, 08 Apr 2023 16:41:40 +0300
 
    - by Teemu Piippo <teemu.s.piippo@gmail.com> [Sat, 08 Apr 2023 16:41:40 +0300] rev 354
 
    - Readd the MainWindow class and renderstyle button handling to it