changelog
    
    
    - Thu, 09 Feb 2017 00:52:23 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 09 Feb 2017 00:52:23 +0200] rev 1100
 
    - Removed all overlay support. It's a messy pile of mess and I will reimplement it later as background images and it will be much better then.
 
    - Thu, 09 Feb 2017 00:45:44 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 09 Feb 2017 00:45:44 +0200] rev 1099
 
    - GLRenderer no longer exposes the model pointer.
 
    - Thu, 09 Feb 2017 00:43:30 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 09 Feb 2017 00:43:30 +0200] rev 1098
 
    - LDGLData merged into GLRenderer since it only deals with one document now. GLRenderer generalised from rendering documents to models.
 
    - Thu, 09 Feb 2017 00:32:24 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 09 Feb 2017 00:32:24 +0200] rev 1097
 
    - Made a new renderer be created for each document, instead of reusing the same renderer for all documents.
 
    - Wed, 08 Feb 2017 17:07:19 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Wed, 08 Feb 2017 17:07:19 +0200] rev 1096
 
    - Simplified GLRenderer::convert3dTo2d. The multiplication with the modelview matrix is not necessary, it's identity all the time... with that, I think the function makes much more sense now.
 
    - Wed, 08 Feb 2017 16:51:55 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Wed, 08 Feb 2017 16:51:55 +0200] rev 1095
 
    - - Use a QGenericMatrix to store the matrix, instead of a C array
- Only reset angles when GL is initialized, otherwise bad things happen
- Fixed missing "}" in matrix string representation 
    - Wed, 08 Feb 2017 16:45:32 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Wed, 08 Feb 2017 16:45:32 +0200] rev 1094
 
    - Changed from GLdouble to GLfloat. Apparently the performance difference is greater on the GPU..? It doesn't really matter but let's be consistent.
 
    - Wed, 08 Feb 2017 16:38:59 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Wed, 08 Feb 2017 16:38:59 +0200] rev 1093
 
    - GLRenderer::clampAngle is no longer used as of the previous commit so we can do away with it.
 
    - Wed, 08 Feb 2017 16:25:06 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Wed, 08 Feb 2017 16:25:06 +0200] rev 1092
 
    - Switched from euler angle rotation to matrix rotation. Gimbal lock is now broken.
 
    - Sat, 04 Feb 2017 14:44:39 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Sat, 04 Feb 2017 14:44:39 +0200] rev 1091
 
    - Wrote documentation to the Model class.
 
    - Sat, 04 Feb 2017 14:24:16 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Sat, 04 Feb 2017 14:24:16 +0200] rev 1090
 
    - The current document pointer may no longer be null.
 
    - Fri, 03 Feb 2017 10:51:08 +0200
 
    - by Teemu Piippo <teemu@compsta2.com> [Fri, 03 Feb 2017 10:51:08 +0200] rev 1089
 
    - minor amendment
 
    - Fri, 03 Feb 2017 10:44:23 +0200
 
    - by Teemu Piippo <teemu@compsta2.com> [Fri, 03 Feb 2017 10:44:23 +0200] rev 1088
 
    - Reworked and cleaned up the circle mode
 
    - Mon, 30 Jan 2017 14:30:55 +0200
 
    - by Teemu Piippo <teemu@hecknology.net> [Mon, 30 Jan 2017 14:30:55 +0200] rev 1087
 
    - Some code cleanup in abstract editing modes.