Update changelog

Author: afk-mario

CHANGELOG.md

@@ -5,9 +5,12 @@ 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]
+
+## [1.3.0] - 2019-02-19
 ### Added
 - Buttons for changing the order of the search results
 - Add web-ext config file for easier build toolchain
+- Add express config for easier debugging
 
 ## [1.2.1] - 2019-02-18
 ### Added