towards exposing CoreDNS functionality to make this as easy as possible. Is also a fairly small
release.
## Core
Expose the directives list, so that external plugins can be easily added without mucking with
CoreDNS code, see the [pull request](https://github.com/coredns/coredns/pull/1315) for details.
Fix crash when there are no handlers that can actually serve queries, i.e. a Corefile with only
*debug* and *pprof* for instance.
## Plugins
* [*metrics*](/plugins/metrics) has a New function to help external plugin developers.
* [*health*](/plugins/health) plugin now checks all plugins for a `health.Healther` implementation and will export health for those plugins that do. Again helps external plugin developers.
* [*rewrite*](/plugins/rewrite) gained regular expression and substring-matching support.
## Contributors
The following people helped with getting this release done:
Brad Beam,
Francois Tur,
Frederic Hemberger,
James Hartig,
Max Schmitt,
Miek Gieben,
Paul Greenberg,
Yong Tang.
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/).