Version bump to 1.4.0

Author: matsoftware

CHANGELOG.md

@@ -4,7 +4,7 @@ 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/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [1.4.0](https://github.com/matsoftware/swift-code-metrics/releases/tag/1.4.0) - 2020-02-22
+## [1.4.0](https://github.com/matsoftware/swift-code-metrics/releases/tag/1.4.0) - 2020-02-25
 
 ### Added