* throwing an exception if parsing fails. Valid inputs are exactly those accepted by {@link
   * Double#valueOf(String)}, except that leading and trailing whitespace is not permitted.
   *
   * <p>This implementation is likely to be faster than {@code Double.parseDouble} if many failures
   * are expected.
   *
   * @param string the string representation of a {@code double} value

    for each. This changes `Address` to no longer use `ConnectionSpec`. (This is
    an incompatible API change).

 *  **`FormEncodingBuilder` now uses `%20` instead of `+` for encoded spaces.**
    Both are permitted-by-spec, but `%20` requires fewer special cases.

 *  **Okio has been updated to 1.4.0.**
     ```xml
     <dependency>
       <groupId>com.squareup.okio</groupId>
       <artifactId>okio</artifactId>

* [alpha] Make locally attached (non-network attached) storage available as a persistent volume source. For more information, see [Storage Volumes - local](https://kubernetes.io/docs/concepts/storage/volumes/#local).

#### Volume Plugins

* 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))

The rewritten code does <code>*p = 1</code> and then <code>*p = 3</code>,
allowing a racing thread to read 1 as well.
</p>

<p>
Note that all these optimizations are permitted in C/C++ compilers:
a Go compiler sharing a back end with a C/C++ compiler must take care
to disable optimizations that are invalid for Go.
</p>

<p>
Note that the prohibition on introducing data races

When the **container** is started and running (started from a **container image**) it could create or change files, environment variables, etc. Those changes will exist only in that container, but would not persist in the underlying container image (would not be saved to disk).

A container image is comparable to the **program** file and contents, e.g. `python` and some file `main.py`.

	tok := p.peek()
	if tok == '>' {
		isStatic = true
	} else if tok == scanner.Ident {
		abistr := p.get(scanner.Ident).String()
		if !p.allowABI {
			if issueError {
				p.errorf("ABI selector only permitted when compiling runtime, reference was to %q", name)
			}
		} else {
			theabi, valid := obj.ParseABI(abistr)
			if !valid {
				if issueError {
					p.errorf("malformed ABI selector %q in reference to %q",

- **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))

- Raw block volume support is promoted to beta, and enabled by default. This is accessible via the `volumeDevices` container field in pod specs, and the `volumeMode` field in persistent volume and persistent volume claims definitions. ([#71167](https://github.com/kubernetes/kubernetes/pull/71167), [@msau42](https://github.com/msau42))

     * Behavior change:
        * DaemonSet pods will be created on nodes with .spec.unschedulable=true and will
not be evicted from nodes whose Ready condition is false.
        * Updates to the pod template are now permitted. To perform a rolling update of a
DaemonSet, update the pod template and then delete its pods one by one; they
will be replaced using the updated template.
     * Spec change: