"Edge Boom" node.

Created by: portnov

This node is similar to "polygon boom". It takes a mesh and outputs a separate object for each edge of input mesh. The node has two modes of output:

• "Object mode": output list of vertices (always two) and list of edges (always one) for each edge of the mesh;
• "Vertices mode": for each edge of the mesh, output it's first vertex into one socket, and the second vertex into another socket.

Preflight checklist

Put an x letter in each brackets when you're done this item:

• 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.