New features:

• Operator reconciles CHI with the actual state of objects in k8s. In previous releases it compared new CHI and old CHI, but not with k8s state.
• The current reconcile cycle can be interrupted with a new CHI update now. In previous releases user had to wait until reconcile is complete for all nodes..
• Added volumeClaimTemplate annotations. Closes https://github.com/Altinity/clickhouse-operator/issues/578
• clickhouse_operator user/password can be stored in a secret instead of a configuration file. Closes: https://github.com/Altinity/clickhouse-operator/issues/386
• Added 'excludeFromPropagationLabels' option
• Added readiness check
• LabelScope metrics are removed by default since it causes pods to restart when changing a cluster with circular replication. Closes: https://github.com/Altinity/clickhouse-operator/issues/666. If you need those labels, they can be turned on with 'appendScopeLabels' configuration option
• Monitoring of detached parts
• Operator ClusterRole is restricted. Closes https://github.com/Altinity/clickhouse-operator/issues/646
• Logging improvements

Bug fixes:

• Fixed a bug when CHI pods could get stuck in ErrImagePull status when wrong image has been used
• Fixed a bug when operator tried to apply schema to non-existing pods, and entered a lengthy retry cycle

Upgrade notes:

• Existing clusters will be restarted with the operator upgrade due to signature change
• Due to ClusterRole change the upgrade with re-applying installation manifest may fail. See https://github.com/Altinity/clickhouse-operator/issues/684