changelog
    
    
    - Sat, 04 Aug 2018 21:46:58 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sat, 04 Aug 2018 21:46:58 +0300] rev 1428
 
    - fixed a crash when trying to open a document for the 3rd time after closing it 2 times
 
    - Fri, 13 Jul 2018 20:48:55 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 13 Jul 2018 20:48:55 +0300] rev 1427
 
    - add const
 
    - Fri, 13 Jul 2018 20:47:35 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 13 Jul 2018 20:47:35 +0300] rev 1426
 
    - fix object moving
 
    - Sat, 23 Jun 2018 13:57:04 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sat, 23 Jun 2018 13:57:04 +0300] rev 1425
 
    - added icons for circular primitives and enhanced some existing ones
 
    - Fri, 22 Jun 2018 15:03:50 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 22 Jun 2018 15:03:50 +0300] rev 1424
 
    - removed a duplicate member
 
    - Fri, 22 Jun 2018 14:46:30 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 22 Jun 2018 14:46:30 +0300] rev 1423
 
    - fixed rendering of bézier curves
 
    - Fri, 22 Jun 2018 14:33:09 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 22 Jun 2018 14:33:09 +0300] rev 1422
 
    - simplified format()
 
    - Fri, 22 Jun 2018 14:15:27 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 22 Jun 2018 14:15:27 +0300] rev 1421
 
    - Fixed cmake warning