docs: update CHANGELOG.md

Author: twibiral

CHANGELOG.md

@@ -4,16 +4,12 @@ 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/),
 
-## [Unreleased]
-
-### Added
-- Support for PHP (Thanks to @tlwt)
-
 
 
 ## [2.0.0]
 ### Added
 - Persistent output blocks (Thanks to @chlohal and @twibiral)
+- Support for PHP (Thanks to @tlwt)
 
 
 ## [1.12.0]