* add AutoReconnectPlugin
* merge main
* start simplifying swarm internals
* fix Swarm::into_iter, handler functions, DisconnectEvent, and add some more docs
* add ClientBuilder/SwarmBuilder::reconnect_after
* fix a doctest
* reword SwarmEvent::Disconnect doc
* better behavior when we try to join twice
* reconnect on ConnectionFailedEvent too
* autoreconnect is less breaking now