core update

Author: o10n-x

README.md

@@ -6,6 +6,9 @@ Advanced CSS optimization toolkit. Critical CSS, minification, concatenation, as
 
 * [Documentation](https://github.com/o10n-x/wordpress-css-optimization/tree/master/docs)
 * [Description](https://github.com/o10n-x/wordpress-css-optimization#description)
+* [Version history (Changelog)](https://github.com/o10n-x/wordpress-css-optimization/releases)
+
+https://github.com/o10n-x/wordpress-css-optimization/releases
 
 **This plugin is removed from WordPress.org. Read the story [here](https://github.com/o10n-x/wordpress-css-optimization/issues/4).**