Update changelog for 5.0.0
@@ -7,6 +7,8 @@ Versioning](http://semver.org/spec/v2.0.0.html).
## Unreleased
+### [5.0.0] - 2018-10-30
+
### Added
- Add the `etcd-advertise-client-urls` config attribute to sensu-backend
- Support for multiple API versions added to sensuctl create
