Update CHANGELOG.md

Author: cicirello

CHANGELOG.md

@@ -8,7 +8,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 ### Changed
-* Modernized API documentation website (https://jpt.cicirello.org/) to html5 with search and no frames.
 
 ### Deprecated
 
@@ -17,6 +16,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 
+## [2.2.0] - 2020-09-18
+
+### Changed
+* Modernized API documentation website (https://jpt.cicirello.org/) to html5 with search and no frames.
+
+
 ## [2.1.3] - 2020-09-16
 
 ### Changed