Backwards edges in the graph

[raguiar2]

Is your feature request related to a problem? Please describe.
I want to be able to add backwards edges to my graph - for example, if I have an edge between node A and node B, I want to be able to click on node B and drag back to node A to create a backwards connection between the two. There does not seem to be any way to do this right now.

Describe the solution you'd like
From the description:
If I have an edge between node A and node B, I want to be able to click on node B and drag back to node A to create a backwards connection between the two.

Describe alternatives you've considered
Add a node in between the two? Not a great fix, have also considered other graph libraries.