geom_edge_parallel: any way to not sort edges by direction?

[kaijagahm]

Hi @thomasp85,

The documentation for geom_edge_parallel says "The edges are first sorted by direction and then shifted a fixed amount so that all edges are visible." I'm wondering whether there's an option to sort the edges by something else, rather than direction. Could I keep the edges in the same order they appear in the tbl_graph?

This is not a high priority thing (I'm just idly making some art), but I was curious. I might dig into the code and see if I can figure it out myself. If you have any pointers for where to start looking, I'd appreciate them.

Thanks so much for this great package! I love it.