psr/http-message 1.0.1

Added
-----

- Nothing.

Deprecated
----------

- Nothing.

Removed
-------

- Nothing.

Fixed
-----

- Updated all `@return self` annotation references in interfaces to use
  `@return static`, which more closelly follows the semantics of the
  specification.
- Updated the `MessageInterface::getHeaders()` return annotation to use the
  value `string[][]`, indicating the format is a nested array of strings.
- Updated the `@link` annotation for `RequestInterface::withRequestTarget()`
  to point to the correct section of RFC 7230.
- Updated the `ServerRequestInterface::withUploadedFiles()` parameter annotation
  to add the parameter name (`$uploadedFiles`).
- Updated a `@throws` annotation for the `UploadedFileInterface::moveTo()`
  method to correctly reference the method parameter (it was referencing an
  incorrect parameter name previously).