changelog
    
    
    - Fri, 17 Sep 2021 22:38:53 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 17 Sep 2021 22:38:53 +0300] rev 130
 
    - Add missing changes to canvas.h
 
    - Sun, 12 Sep 2021 13:50:28 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 12 Sep 2021 13:50:28 +0300] rev 129
 
    - Add documentation
 
    - Sun, 12 Sep 2021 12:14:32 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 12 Sep 2021 12:14:32 +0300] rev 128
 
    - Moved automatic grid adjusting into a new action
 
    - Sun, 29 Aug 2021 22:14:42 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 29 Aug 2021 22:14:42 +0300] rev 127
 
    - added a simple matrix transformation tool
 
    - Sun, 29 Aug 2021 21:28:08 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 29 Aug 2021 21:28:08 +0300] rev 126
 
    - moved ObjectEditor under SelectTool
 
    - Sun, 29 Aug 2021 20:39:55 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 29 Aug 2021 20:39:55 +0300] rev 125
 
    - Move tools under Document instead of MainWindow
 
    - Sun, 29 Aug 2021 20:05:24 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 29 Aug 2021 20:05:24 +0300] rev 124
 
    - esc with draw mode now clears the polygon
 
    - Fri, 27 Aug 2021 14:38:56 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 27 Aug 2021 14:38:56 +0300] rev 123
 
    - refactor
 
    - Fri, 27 Aug 2021 00:55:32 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 27 Aug 2021 00:55:32 +0300] rev 122
 
    - Show concave polygons as red while drawing
 
    - Fri, 30 Jul 2021 01:28:39 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 30 Jul 2021 01:28:39 +0300] rev 121
 
    - added right click support for draw tool
 
    - Wed, 28 Jul 2021 13:22:51 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Wed, 28 Jul 2021 13:22:51 +0300] rev 120
 
    - rework rendering of vertices
 
    - Wed, 28 Jul 2021 08:23:09 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Wed, 28 Jul 2021 08:23:09 +0300] rev 119
 
    - update
 
    - Tue, 27 Jul 2021 16:29:00 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Tue, 27 Jul 2021 16:29:00 +0300] rev 118
 
    - Add vertex rendering
 
    - Tue, 27 Jul 2021 13:23:34 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Tue, 27 Jul 2021 13:23:34 +0300] rev 117
 
    - Add vertex map
 
    - Tue, 27 Jul 2021 12:44:54 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Tue, 27 Jul 2021 12:44:54 +0300] rev 116
 
    - refactor
 
    - Tue, 27 Jul 2021 11:11:32 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Tue, 27 Jul 2021 11:11:32 +0300] rev 115
 
    - fix too long lines
 
    - Tue, 27 Jul 2021 09:56:06 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Tue, 27 Jul 2021 09:56:06 +0300] rev 114
 
    - added build-time test for line length
 
    - Mon, 26 Jul 2021 11:50:45 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Mon, 26 Jul 2021 11:50:45 +0300] rev 113
 
    - refactor
 
    - Sun, 25 Jul 2021 20:39:21 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 25 Jul 2021 20:39:21 +0300] rev 112
 
    - use QT_NO_KEYWORDS
 
    - Sun, 25 Jul 2021 20:29:14 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 25 Jul 2021 20:29:14 +0300] rev 111
 
    - Draw tool actually adds objects now
 
    - Sun, 25 Jul 2021 16:29:08 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 25 Jul 2021 16:29:08 +0300] rev 110
 
    - stuff
 
    - Sun, 25 Jul 2021 16:26:38 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 25 Jul 2021 16:26:38 +0300] rev 109
 
    - replaced preview layers in favor of overpainting callback
 
    - Sun, 25 Jul 2021 13:49:37 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 25 Jul 2021 13:49:37 +0300] rev 108
 
    - work on editing tools
 
    - Sat, 24 Jul 2021 01:50:38 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sat, 24 Jul 2021 01:50:38 +0300] rev 107
 
    - Move selection logic into select tool
 
    - Tue, 20 Jul 2021 01:22:01 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Tue, 20 Jul 2021 01:22:01 +0300] rev 106
 
    - work on draw preview
 
    - Mon, 19 Jul 2021 23:41:52 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Mon, 19 Jul 2021 23:41:52 +0300] rev 105
 
    - added preview layer code and fixed build warnings
 
    - Mon, 19 Jul 2021 19:28:16 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Mon, 19 Jul 2021 19:28:16 +0300] rev 104
 
    - Add connections
 
    - Sun, 16 May 2021 22:41:00 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 16 May 2021 22:41:00 +0300] rev 103
 
    - update
 
    - Wed, 17 Feb 2021 16:49:35 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Wed, 17 Feb 2021 16:49:35 +0200] rev 102
 
    - stuff
 
    - Fri, 05 Feb 2021 14:23:16 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 05 Feb 2021 14:23:16 +0200] rev 101
 
    - added references to items()