* AWS: Recognize ca-central-1 region ([#38410](https://github.com/kubernetes/kubernetes/pull/38410), [@justinsb](https://github.com/justinsb))
* fix nil dereference when doing a volume type check on persistent volumes ([#39529](https://github.com/kubernetes/kubernetes/pull/39529), [@sjenning](https://github.com/sjenning))

- **Storage**
  - [beta] Persistent Volume provisioning now supports multiple provisioners using StorageClass configuration. ([docs](http://kubernetes.io/docs/user-guide/persistent-volumes/)) ([kubernetes/features#36](https://github.com/kubernetes/enhancements/issues/36))

again.

  `I should like to have it explained,' said the Mock Turtle.

  `She can't explain it,' said the Gryphon hastily.  `Go on with
the next verse.'

  `But about his toes?' the Mock Turtle persisted.  `How COULD
he turn them out with his nose, you know?'

  `It's the first position in dancing.' Alice said; but was
dreadfully puzzled by the whole thing, and longed to change the
subject.