Summary

A method edge_references_mut(&mut self) -> EdgeReferencesMut<...> would be nice.

Motivation

For my use case, the edges data are FnMut closures so calling them requires mutable access. When I can, I use edge_weights_mut(&mut self) -> EdgeWeightsMut<'_, E, Ix> but sometimes I need the EdgeRef trait source and target methods.

Details

Unless I am missing something, this should be quite straightforward to implement. I can do a PR if there is interest.