CHANGELOG.md in app_manifest-0.3.0 vs CHANGELOG.md in app_manifest-0.4.0

- old
+ new

@@ -5,9 +5,14 @@
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Unreleased
 
+## [0.4.0] - 2017-11-28
+
+### Fixed
+- Support canonicalization for env shorthands with numeric values(for example:  `{ "env": { "FOO": 5 } }`).
+
 ## [0.3.0] - 2017-06-18
 
 ### Added
 - Manifests are now fully modeled. There are now getters and setters for
   nested data (for example: `manifest.addons.first.plan`).