* Replace `tf.keras.mixed_precision.experimental.set_policy` with `tf.keras.mixed_precision.set_global_policy`. The experimental symbol `set_policy` was renamed to `set_global_policy` in the non-experimental API.

                          enum:
                          - INVALID
                          - MERGE
                          - ADD
                          - REMOVE
                          - INSERT_BEFORE
                          - INSERT_AFTER
                          - INSERT_FIRST
                          - REPLACE
                          type: string

### Feature

- 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

background-image: url($file-2x);\n    background-size: $width-1x $height-1x;\n  }\n  @include deprecate(\"`img-retina()`\", \"v4.3.0\", \"v5\");\n}\n","// stylelint-disable property-disallowed-list\n// Single side border-radius\n\n// Helper function to replace negative values with 0\n@function valid-radius($radius) {\n  $return: ();\n  @each $value in $radius {\n    @if type-of($value) == number {\n      $return: append($return, max($value, 0));\n    } @else {\n      $return: append($return, $value);\n...

}\n\n  // Empty badges collapse automatically\n  &:empty {\n    display: none;\n  }\n}\n\n// Quick fix for badges in buttons\n.btn .badge {\n  position: relative;\n  top: -1px;\n}\n\n// Pill badges\n//\n// Make them extra rounded with a modifier to replace v3's badges.\n\n.badge-pill {\n  padding-right: $badge-pill-padding-x;\n  padding-left: $badge-pill-padding-x;\n  @include border-radius($badge-pill-border-radius);\n}\n\n// Colors\n//\n// Contextual variations (linked badges get darker on :hover).\n\n@each...