Prepare v2.9.0 release

Author: clue

CHANGELOG.md

@@ -1,6 +1,30 @@
 CHANGELOG for 2.x
 =================
 
+* 2.9.0 (2022-02-11)
+
+    *   Feature: Support union types and address deprecation of `ReflectionType::getClass()` (PHP 8+).
+        (#198 by @cdosoftei and @SimonFrings)
+
+        ```php
+        $promise->otherwise(function (OverflowException|UnderflowException $e) {
+            echo 'Error: ' . $e->getMessage() . PHP_EOL;
+        });
+        ```
+
+    *   Feature: Support intersection types (PHP 8.1+).
+        (#195 by @bzikarsky)
+
+        ```php
+        $promise->otherwise(function (OverflowException&CacheException $e) {
+            echo 'Error: ' . $e->getMessage() . PHP_EOL;
+        });
+        ```
+
+    *   Improve test suite, use GitHub actions for continuous integration (CI),
+        update to PHPUnit 9, and add full core team to the license.
+        (#174, #183, #186, and #201 by @SimonFrings and #211 by @clue)
+
 * 2.8.0 (2020-05-12)
 
     *   Mark `FulfilledPromise`, `RejectedPromise` and `LazyPromise` as deprecated for Promise v2 (and remove for Promise v3).

README.md

@@ -849,15 +849,14 @@ This project follows [SemVer](https://semver.org/).
 This will install the latest supported version:
 
 ```bash
-$ composer require react/promise:^2.8
+$ composer require react/promise:^2.9
 ```
 
 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 5.4 through current PHP 7+ and HHVM.
-It's *highly recommended to use PHP 7+* for this project due to its vast
-performance improvements.
+extensions and supports running on legacy PHP 5.4 through current PHP 8+ and HHVM.
+It's *highly recommended to use the latest supported PHP version* for this project.
 
 Credits
 -------