v0.2.3

In this release we fixed some bugs, add some new features and add documentation.

• Fixed metrics exporter password generation to not contain ? (#195 )
• Increase initialDelaySeconds to 60 seconds (#184 )
• Fix recurrent backups for cluster and backupScheduleJobsHistoryLimit field (#182 )
• Use Kubernetes recommended labels (#132 )
• Fix query for lag detection (#174 )
• Upgrade controller-runtime deps also client-go was updated (#191 )
• Better slave initialization that from xtrabackup (#202 )
• Add support for emptyDir and hostPath and change volumeSpec by deprecating inline specification for PVC and add persistentVolumeClaim as subfield (#114 )
• Add documentation (#92, #168, #170 )