v1.10.0

• Feature: Add new PSR-7 implementation and remove dated RingCentral PSR-7 dependency.
  (#518, #519, #520 and #522 by @clue)

  This changeset allows us to maintain our own PSR-7 implementation and reduce
  dependencies on external projects. It also improves performance slightly and
  does not otherwise affect our public API. If you want to explicitly install
  the old RingCentral PSR-7 dependency, you can still install it like this:

  composer require ringcentral/psr7

• Feature: Add new Uri class for new PSR-7 implementation.
  (#521 by @clue)

• Feature: Validate outgoing HTTP message headers and reject invalid messages.
  (#523 by @clue)

• Feature: Full PHP 8.3 compatibility.
  (#508 by @clue)

• Fix: Fix HTTP client to omit Transfer-Encoding: chunked when streaming empty request body.
  (#516 by @clue)

• Fix: Ensure connection close handler is cleaned up for each request.
  (#515 by @WyriHaximus)

• Update test suite and avoid unhandled promise rejections.
  (#501 and #502 by @clue)