update changelog

Author: tiagoschenkel

CHANGELOG.md

@@ -43,14 +43,12 @@ Types of changes:
 - in case of vulnerabilities.
 -->
 
-## Signals 1.0.0
-
-### [v1.0.3](https://github.com/RobotlegsJS/SignalsJS/releases/tag/1.0.3) - 2019-08-15
-
 #### Changed
 
 - Update dev dependencies to latest version.
 
+## Signals 1.0.0
+
 ### [v1.0.2](https://github.com/RobotlegsJS/SignalsJS/releases/tag/1.0.2) - 2019-07-18
 
 #### Changed