With #380 landed, we should update the tutorial to use them. This would remove the final dependency on futures-rs (and importantly: Sink) which should be a big step up in terms of usability.

Also we should consider moving from select! {} to Stream::merge. From chat with @skade we've figured out how to "send a close message after a stream has been exhausted":

enum EventKind {
 Event(/* event_type */),
 Shutdown,
}
let events = events.map(|ev| EventKind::Event(ev)).join(stream::once(EventKind::Shutdown));
let shutdown = shutdown.map(|e| EventKind::Event(e));
let s = events.merge(shutdown);
while let Some(event) = s.next().await {
 match event {
 EventKind::Event(ev) => /* handle event */,
 EventKind::Shutdown => /* handle shutdown */,
 }
}

@skade I'm assigning this to you as you've been working on updating this recently. Feel free to unassign yourself if you don't think you'll have bandwidth. Thanks!

edit: this would resolve #105 and #13