changelog
    
    
    - Thu, 10 May 2018 15:54:26 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 10 May 2018 15:54:26 +0300] rev 1388
 
    - fixed that scaling factors could be negative
 
    - Thu, 10 May 2018 15:48:39 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 10 May 2018 15:48:39 +0300] rev 1387
 
    - added a doublespinbox variant that uses "." as the decimal point and omits trailing zeros
 
    - Thu, 10 May 2018 14:57:23 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 10 May 2018 14:57:23 +0300] rev 1386
 
    - added scaling vector editing into the subfile editing dialog
 
    - Fri, 27 Apr 2018 16:27:14 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 27 Apr 2018 16:27:14 +0300] rev 1385
 
    - added vertex rendering
 
    - Wed, 25 Apr 2018 18:55:15 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Wed, 25 Apr 2018 18:55:15 +0300] rev 1384
 
    - some fixes
 
    - Thu, 05 Apr 2018 22:56:37 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 05 Apr 2018 22:56:37 +0300] rev 1383
 
    - fixed vertex cache spontaneously clearing
 
    - Wed, 04 Apr 2018 12:08:45 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Wed, 04 Apr 2018 12:08:45 +0300] rev 1382
 
    - refactored the quick color toolbar
 
    - Wed, 04 Apr 2018 11:43:15 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Wed, 04 Apr 2018 11:43:15 +0300] rev 1381
 
    - removed dead code