revised changelog for 6.4.2

Author: roninopf

CHANGELOG.md

@@ -4,21 +4,14 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## 6.4.2
 ### Added
-​
 - Added support for apps built using Mac Catalyst.
 ​
 ### Fixed
-​
 - Fixed a couple of problems related to Swift Package Manager and the creation of release builds and simulator artifacts.
 - Fixed a problem with the SDK’s Carthage integration.
 - Fixed a problem that prevented the SDK from properly tracking inbox sessions when a mobile inbox is displayed in `popup` mode.
 - In-app delete events are now correctly associated with inbox session IDs.
 - Fixed some problems in a script that generates XCFramework binaries.
-​
-### Changed
-​
-- Updated API requests so that API keys are in the headers but not the body
-
 
 ## 6.4.1
 ### Fixed