A crate to implement DNS [Server]s and clients.
```rust
use dominion::{Server, ServerService, DnsPacket};
use std::net::SocketAddr;
struct Echo;
impl ServerService for Echo {
fn run<'a>(&self, _client: SocketAddr, question: DnsPacket<'a>) -> Option<DnsPacket<'a>> { Some(question) }
}
Server::default()
```