Graph visualisation

[clbarnes]

Or document "use networkx".

• https://networkx.org/documentation/stable/reference/drawing.html
• https://iplotx.readthedocs.io/en/latest/

[jo-mueller]

I think the networkx functionality is a very reasonable go-to. You could have a graph.draw()method on the graph class, but that would effectively require matplotlib as a dependency, which is maybe not ideal.