Update changelog

Author: twiebe

CHANGELOG.md

@@ -8,4 +8,10 @@
 
 - Fix synchronous client behaviour for delete_loadbalancer() endpoint
 - Add get_label() endpoint
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+
+## [v1.0.3] 
+
+- Add storage_clone() endpoint
+- Add get_deleted_loadbalancers() endpoint
+- Add renew_paas_service_credentials() endpoint
+- Remove deprecated create_label() and delete_label() endpoints