Merge branch 'release/v0.4.0'

Author: npalm

CHANGELOG.md

@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [0.4.0] - 2020-08-10
 
-### Added 
+### Added
 
 - feat: idle runners #113