Changelog: add breaking change
- Boundaries between Namespaces has been removed and all nodes can communicate by default [#357](https://github.com/juanfont/headscale/pull/357)
- To limit access between nodes, use [ACLs](./docs/acls.md).
+- `/metrics` is now a configurable host:port endpoint: [#344](https://github.com/juanfont/headscale/pull/344). You must update your `config.yaml` file to include:
+ ```yaml
+ metrics_listen_addr: 127.0.0.1:9090
+ ```
### Features
