Add CHANGELOG.md

Fixes #1

Author: reedy

CHANGELOG.md

@@ -0,0 +1,21 @@
+# Changelog
+
+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
+
+- Added changelog from [@reedy](https://github.com/reedy).
+
+### Internal
+
+- Travis: test against PHP 7.3 from [@samnela](https://github.com/samnela).
+- Cleaned readme - new organization from previous package from [@grogy](https://github.com/grogy).
+- Composer: updated dependancies to use new php-parallel-lint organisation from [@grogy](https://github.com/grogy).
+- Composer: marked package as replacing jakub-onderka/php-console-color from [@jrfnl](https://github.com/jrfnl).
+- Added a .gitattributes file from [@reedy](https://github.com/reedy).
+- Travis: test against PHP 7.4 and nightly from [@jrfnl](https://github.com/jrfnl).
+- Travis: only run PHPCS on PHP 7.4 from [@jrfnl](https://github.com/jrfnl).