Custom hasher

[rluvaton]

Great project! it would be great if Custom Hasher was supported

I'm willing to create a PR if interested

[Wasabi375]

I somehow missed the notification for this issue otherwise I would have responded earlier.

I don't currently use this crate so I don't know when or if I have time to implement this. But I'd be happy to accept any PR you create. Hopefully I won't miss any other notifications.