New Features

Rack, zone and region support when prioritizing nodes during scheduling (#37)
- The topology information is collected from the storage driver and Kubernetes
Initializer to update schedulerName for Deployments and StatefulSets if it uses a PV by the storage driver (#51)
- Useful when you cannot update the schedulerName (like in Helm charts)
- This depends on an Alpha feature in Kubernetes, so it is marked as an experimental feature in STORK and is disabled by default
- Instructions to enable this feature can be found here: https://github.com/libopenstorage/stork#initializer-experimental
Portworx Driver:
- Support for group snapshots (#61) (Supported from PX 1.4 onwards)
  - Documentation: https://docs.portworx.com/scheduler/kubernetes/snaps-group.html
- Support for cloud snapshots (#55) (Supported from PX 1.4 onwards)
  - Documentation: https://docs.portworx.com/scheduler/kubernetes/snaps-cloud.html

Improvements

Check other sources in PVC to match driver (#49)
Use snapshot UUID instead of name to allow re-use of snapshot names across namespaces (#67)
Health Monitor interval in seconds can be configured using --health-monitor-interval. The default is 120 seconds and the minimum is 30 seconds (#91)
Return error from scheduler extender when none of the nodes in Filter request have the storage driver online (#89)