Prepare v1.4.0 release

Author: SimonFrings

CHANGELOG.md

@@ -1,5 +1,16 @@
 # Changelog
 
+## 1.4.0 (2021-11-15)
+
+*   Feature: Support PHP 8.1, avoid deprecation warning concerning `\Countable::count(...)` return type.
+    (#32 by @bartvanhoutte)
+
+*   Improve documentation and simplify examples by updating to new [default loop](https://reactphp.org/event-loop/#loop).
+    (#27 and #29 by @PaulRotmann and #30 by @SimonFrings)
+
+*   Improve test suite to use GitHub actions for continuous integration (CI).
+    (#28 by @SimonFrings)
+
 ## 1.3.0 (2020-10-16)
 
 *   Enhanced documentation for ReactPHP's new HTTP client and

README.md

@@ -484,14 +484,14 @@ This project follows [SemVer](https://semver.org/).
 This will install the latest supported version:
 
 ```bash
-$ composer require clue/mq-react:^1.3
+$ composer require clue/mq-react:^1.4
 ```
 
 See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
 
 This project aims to run on any platform and thus does not require any PHP
 extensions and supports running on legacy PHP 5.3 through current PHP 8+.
-It's highly recommended to use the latest supported PHP version for this project.
+It's *highly recommended to use the latest supported PHP version* for this project.
 
 ## Tests