Update changelog date

Author: otsch

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [4.0.1] - 2020-10-14
+## [4.0.1] - 2020-10-15
 ### Fixed
 - Still handle CallbackBinding when property name doesn't match a JSON fieldname.