📚 Add a changelog

Author: jrfnl

CHANGELOG.md

@@ -0,0 +1,18 @@
+# Change Log for the PHPCSDevCS standard for PHP Codesniffer
+
+All notable changes to this project will be documented in this file.
+
+This projects adheres to [Keep a CHANGELOG](http://keepachangelog.com/) and uses [Semantic Versioning](http://semver.org/).
+
+
+## [Unreleased]
+
+_Nothing yet._
+
+
+## 1.0.0 - 2020-02-12
+
+Initial release.
+
+
+[Unreleased]: https://github.com/PHPCSStandards/PHPCSDevCS/compare/1.0.0...HEAD