Federated usernames

[bamidev]

I want to add 'federated usernames'. Currently, each actor has an address. But sharing addresses may seem a bit cumbersome, or scary to non-technical users.

The way I see his happening is that a domain name can have a seperate record that gives you an IP address for the node that exposes the usernames it supports. And then the protocol of stonenet can be expanded to include a request that resolves a username to an actor address, and optionally to a node address.