## edge-20.5.3
* Controller
* Added a Grafana dashboard for tracking multi-cluster traffic metrics
* Added health checks for the Grafana add-on, under a separate section
* Fixed issues when updating a remote multi-cluster gateway
* Proxy
* Added special special handling for I/O errors in HTTP responses so that an
`errno` label is included to describe the underlying errors in the proxy's
metrics
* Internal
* Started gathering stats of CI runs for aggregating CI health metrics