Update CHANGELOG.md [skip ci]

JaZo · JaZo · commit f23b05641dd3 · 2019-10-04T13:55:50.000+02:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -6,7 +6,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
-* Nothing
+### Changed
+
+* Reworded `ValidationException` messages to align them with the wordings used in the specification.
 
 ## [1.0.0-beta.3] - 2019-09-30
 
