Created by: DolphinDream
The node projects a mesh from 3D space onto a 2D space.
For start, the node does a perspective projection onto a plane. Further development will add cylindrical and spherical projection as well and other features.
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Code changes complete.  - 
Code documentation complete.  - 
Documentation for users complete (or not required, if user never sees these changes).  - 
Manual testing done.  - 
Unit-tests implemented.  - 
Ready for merge.  
