Fix version number in changelog

Author: Philipp Oppermann

CHANGELOG.md

@@ -5,7 +5,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
-## [0.4.3] - 2018-06-01
+## [0.4.4] - 2018-06-01
 - Add config option `sysroot_path` that defines where the sysroot should be placed. Defaults to the `target/sysroot`.
 
 ## [0.4.3] - 2018-05-31