Changelog and readme.txt edits.

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/9283794120

Upstream-Ref: Automattic/jetpack@f6bd460

CHANGELOG.md

@@ -5,12 +5,9 @@ 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).
 
-## [3.0.8-alpha] - unreleased
-
-This is an alpha version! The changes listed here are not final.
-
+## [3.0.8] - 2024-05-29
 ### Fixed
-- `AutoloadGenerator::__construct` no longer pretends `$io` is nullable. That never worked.
+- `AutoloadGenerator::__construct` no longer pretends `$io` is nullable. That never worked. [#37608]
 
 ## [3.0.7] - 2024-05-06
 ### Fixed
@@ -367,7 +364,7 @@ This is an alpha version! The changes listed here are not final.
 
 - Add Custom Autoloader
 
-[3.0.8-alpha]: https://github.com/Automattic/jetpack-autoloader/compare/v3.0.7...v3.0.8-alpha
+[3.0.8]: https://github.com/Automattic/jetpack-autoloader/compare/v3.0.7...v3.0.8
 [3.0.7]: https://github.com/Automattic/jetpack-autoloader/compare/v3.0.6...v3.0.7
 [3.0.6]: https://github.com/Automattic/jetpack-autoloader/compare/v3.0.5...v3.0.6
 [3.0.5]: https://github.com/Automattic/jetpack-autoloader/compare/v3.0.4...v3.0.5

src/AutoloadGenerator.php

@@ -21,7 +21,7 @@
  */
 class AutoloadGenerator {
 
-	const VERSION = '3.0.8-alpha';
+	const VERSION = '3.0.8';
 
 	/**
 	 * IO object.