Update Changelog.md

Changelog.md

@@ -2,6 +2,11 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.48] - 2020-07-02
+- recover update gracefully in case of Kombu exceptions
+- update for IMS api changes
+- call otrs-exports in the web server thread, not as a celery task
+
 ## [0.47] - 2020-06-06
 - bugfix when catching junos rpc exceptions