* run kube-addon-manager in a static pod ([#23600](https://github.com/kubernetes/kubernetes/pull/23600), [@mikedanese](https://github.com/mikedanese))
* Reimplement 'pause' in C - smaller footprint all around ([#23009](https://github.com/kubernetes/kubernetes/pull/23009), [@uluyol](https://github.com/uluyol))

 *  **OkHttp now supports duplex calls over HTTP/2.** With normal HTTP calls the request must finish
    before the response starts. With duplex, request and response bodies are transmitted
    simultaneously. This can be used to implement interactive conversations within a single HTTP
    call.

    Create duplex calls by overriding the new `RequestBody.isDuplex()` method to return true.

  // add, update, and remove notifications. Specify resourceVersion.
  // +optional
  optional bool watch = 3;

  // allowWatchBookmarks requests watch events with type "BOOKMARK".
  // Servers that do not implement bookmarks may ignore this flag and
  // bookmarks are sent at the server's discretion. Clients should not
  // assume bookmarks are returned at any specific interval, nor may they