- Since golang 1.17 both net.ParseIP and net.ParseCIDR rejects leading zeros in the dot-decimal notation of IPv4 addresses,
  Kubernetes will keep allowing leading zeros on IPv4 address to not break the compatibility.

The Kubernetes community [has written a blog post about this in detail](https://blog.k8s.io/2020/12/02/dont-panic-kubernetes-and-docker/) with [a dedicated FAQ page for it](https://blog.k8s.io/2020/12/02/dockershim-faq/).

### External credential provider for client-go

*   The NodeDef protocol message is now defined in its own file `node_def.proto`
    `instead of graph.proto`.
*   `ops.NoGradient` was renamed `ops.NotDifferentiable`. `ops.NoGradient` will
    be removed soon.
*   `dot.h` / DotGraph was removed (it was an early analysis tool prior to
    TensorBoard, no longer that useful). It remains in history should someone
    find the code useful.

width: 100%;\n\n  > .form-control,\n  > .form-control-plaintext,\n  > .custom-select,\n  > .custom-file {\n    position: relative; // For focus state's z-index\n    flex: 1 1 0%;\n    min-width: 0; // https://stackoverflow.com/questions/36247140/why-dont-flex-items-shrink-past-content-size\n    margin-bottom: 0;\n\n    + .form-control,\n    + .custom-select,\n    + .custom-file {\n      margin-left: -$input-border-width;\n    }\n  }\n\n  // Bring the \"active\" form control to the top of surrounding...

.form-control,\n  > .form-control-plaintext,\n  > .custom-select,\n  > .custom-file {\n    position: relative; // For focus state's z-index\n    flex: 1 1 auto;\n    width: 1%;\n    min-width: 0; // https://stackoverflow.com/questions/36247140/why-dont-flex-items-shrink-past-content-size\n    margin-bottom: 0;\n\n    + .form-control,\n    + .custom-select,\n    + .custom-file {\n      margin-left: -$input-border-width;\n    }\n  }\n\n  // Bring the \"active\" form control to the top of surrounding...

.form-control,\n  > .form-control-plaintext,\n  > .custom-select,\n  > .custom-file {\n    position: relative; // For focus state's z-index\n    flex: 1 1 auto;\n    width: 1%;\n    min-width: 0; // https://stackoverflow.com/questions/36247140/why-dont-flex-items-shrink-past-content-size\n    margin-bottom: 0;\n\n    + .form-control,\n    + .custom-select,\n    + .custom-file {\n      margin-left: -$input-border-width;\n    }\n  }\n\n  // Bring the \"active\" form control to the top of surrounding...