Add use_arrow_functions fixer

Author: spawnia

CHANGELOG.md

@@ -9,6 +9,12 @@ You can find and compare releases at the [GitHub release page](https://github.co
 
 ## Unreleased
 
+## v5.8.0
+
+### Added
+
+- Add `use_arrow_functions` fixer
+
 ## v5.7.0
 
 ### Added

config.php

@@ -69,6 +69,7 @@ function config(Finder $finder, array $ruleOverrides = []): Config
         'phpdoc_to_comment' => false, // Intermediary PHPDocs are sometimes useful to provide type assertions for PHPStan
         'single_line_empty_body' => true,
         'single_line_throw' => false,
+        'use_arrow_functions' => true,
         'yoda_style' => [ // Not necessary with static analysis, non-Yoda is more natural to write and read
             'equal' => false,
             'identical' => false,