* *rewrite* now allows you to add or modify EDNS0 local or NSID options. The framework is in place to add additional EDNS0 types in the future.
* *etcd* when no upstreams are defined won't default to using 8.8.8.8, 8.8.4.4; it just does not resolve external names in that case.
* *erratic* now can also delay queries and send queries with Truncated set.
* *metrics* will happily start as many (different) listeners as you want (if you really need that).
* *startup* and *shutdown* allow for command to be run during startup or shutdown. These directly use the code from Caddy, see [Caddy's docs](https://caddyserver.com/docs/startup).
* *kubernetes* now implements a `fallthrough` option to pass queries that would result in NXDOMAIN
to the next plugin, even if the query is in the cluster domain. This enables custom DNS
entries in the cluster domain (as long as they do not overlap with a normal Kubernetes record). To
facilitate this the plugin ordering is also altered to put *kubernetes* in the chain before
other backends.
* *cache* will no longer cache RRSIGs that will expire while cached.
# Contributors
The following people helped with getting this release done:
Chris Aniszczyk,
Chris O'Haver,
Christoph Görn,
Dominic,
John Belamaric,
Jonathan Boulle,
Michael,
Michael S. Fischer,
Miek Gieben,
Yong Tang,
Yue Ko.
If you want to help, please check out one of the [issues](https://github.com/coredns/coredns/issues/)
and start coding!
For documentation and help, see our [community page](https://coredns.io/community/).
