We use :💍:rand::SystemRandom, but we need to wrap it
for a couple of traits needed by ::x25519_dalek
Signed-off-by: Luca Fulchir <luca.fulchir@runesauth.com>
No more Arc<Connection>, Rc<Connection> is better on the same thread.
Track the thread number so we can generate the correct connection IDs
Signed-off-by: Luca Fulchir <luca.fulchir@runesauth.com>
