Hi!

Just an idea, I am starting to move code from using Arc<Vec<u8>> to using the Bytes crate (https://github.com/tokio-rs/bytes). This means losing a lot of the capabilities provided by bstr since the traits like ByteSlice always return &[u8] but they could just as easily return Bytes objects.
Let me know what you think, happy to pinch in for the implementation. It should be fairly similar to ByteSlice just without the references.

Thanks