- Kubernetes is now built using go1.15.2
  - build: Update to k/repo-infra@v0.1.1 (supports go1.15.2)
  - build: Use go-runner:buster-v2.0.1 (built using go1.15.1)
  - bazel: Replace --features with Starlark build settings flag
  - hack/lib/util.sh: some bash cleanups
    
    - switched one spot to use kube::logging
    - make kube::util::find-binary return an error when it doesn't find

  <mime-type type="application/pkixcmp">
    <glob pattern="*.pki"/>
  </mime-type>
  <mime-type type="application/pls+xml">
    <glob pattern="*.pls"/>
  </mime-type>
  <mime-type type="application/poc-settings+xml"/>

  <mime-type type="application/postscript">
    <_comment>PostScript</_comment>
    <magic priority="50">
      <match value="%!" type="string" offset="0" />

* kubeadm: Strip bootstrap tokens from the `kubeadm-config` ConfigMap ([#53559](https://github.com/kubernetes/kubernetes/pull/53559), [@fabriziopandini](https://github.com/fabriziopandini))
* Skip podpreset test if the alpha feature settings/v1alpha1 is disabled ([#53080](https://github.com/kubernetes/kubernetes/pull/53080), [@jennybuckley](https://github.com/jennybuckley))

For example, a plugin that implements Score and Filter extensions can be simultaneously enabled for both.
This means entire plugins can be enabled and disabled without having to manually edit individual extension point settings.
These extension points can now be abstracted away due to their irrelevance for most users.

### CSI Migration updates