modified changelog

CHANGELOG.md

 ## [0.0.7-RELEASE]
 ### Added
-- New features that have been added.
-
-### Changed
-- Changes in existing functionality.
-
-### Deprecated
-- Soon-to-be removed features.
-
-### Removed
-- Features that have been removed.
-
-### Fixed
-- Any bug fixes.
-
-### Security
-- Any security improvements.
+- added export messages feature
 ## [0.0.6-RELEASE]
 ### Added
 - added live chat pagination.