prepare release

Author: dbu

CHANGELOG.md

@@ -6,7 +6,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [4.0.0] - 2022-11-14
 
 With this release the promise `wait` function will wait for requests to complete using
 [`react/async`'s `await`](https://reactphp.org/async/#await) utilizing fibers. Instead of constantly