Release version 4.2.0

Author: Jakob Linskeseder

CHANGELOG.md

@@ -4,6 +4,10 @@ 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).
 
+## [4.2.0] - 2022-11-11
+### Added
+- Support for using array-keys in `ArrayBinding` (#52, #55)
+
 ## [4.1.1] - 2022-01-17
 ### Fixed
 - Avoid IDE warnings when passing `Closure` to `CallbackBinding`
@@ -26,15 +30,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [4.0.0] - 2020-10-06
 ### Added
-- support for magic class properties
-- auto casing for json field - class properties mapping
+- Support for magic class properties
+- Auto casing for json field - class properties mapping
 - PHP CS Fixer for linting and fixing code style
 
 ### Changed
-- unit tests to phpunit
+- Unit tests to phpunit
 
 ### Removed
-- support for PHP 7.2
+- Support for PHP 7.2
 
 ## [3.1.0] - 2020-04-10
 ### Added
@@ -53,10 +57,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `validate` function for checking the `isRequired` flag for Bindings
 
 ### Changed
-- transform `Binding` to an abstract class and unify functionality from `AliasBinding`, `ArrayBinding` & `FieldBinding`
+- Transform `Binding` to an abstract class and unify functionality from `AliasBinding`, `ArrayBinding` & `FieldBinding`
 
 ### Fixed
-- check for `isRequired` flag is only executed when applicable
+- Check for `isRequired` flag is only executed when applicable
 
 ## [2.2.0] - 2019-01-11
 ### Added