Diameter node input format

[ArpegorPSGH]

The Diameter node direction input only accepts directions as tuples, not lists. A list of tuples is fine, but not a pure list of lists. There is no such obligation with the vertices input. I think the node should accept both formats.

[satabol]

http://nortikin.github.io/sverchok/docs/nodes/analyzer/diameter.html

Temporary Solution "Vector In -> Vector Out":

[ArpegorPSGH]

Yeah, I already figured this out and I'm currently using it to make the node tree work, but it is ugly.