Update changelog for release 0.1.0

Author: Valerii Maslenykov

CHANGELOG.md

@@ -5,14 +5,13 @@ 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).
 
-## [Unreleased]
+## [0.1.0] - 2023-03-15
 
 ### Added
 
-- Source code with the implementation of getContents and getContent
-- Flexible caching with PSR-16
-- Custom HTTP client with PSR-18
-- Examples
-- Documentation (README.md)
-- GitHub Actions pipeline to check code style + Unit Testing at different PHP versions + different platforms
-
+-   Source code with the implementation of `getContents` and `getContent`
+-   Flexible caching with [PSR-16](https://www.php-fig.org/psr/psr-16/)
+-   Custom HTTP client with [PSR-18](https://www.php-fig.org/psr/psr-18/)
+-   [Examples](./examples)
+-   Documentation [(README.md)](./README.md)
+-   [GitHub Actions pipeline](https://github.com/getjoystick/joystick-php/blob/main/.github/workflows/main.yml) to check code style + Unit Testing at different PHP versions + different platforms