DOC: update CHANGELOG

CHANGELOG.md

@@ -8,6 +8,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added (for new features, dependecies etc.)
 
+* entity_acl module which adds a button to each entity which links to the
+  webui-acm module. Enable via BUILD_MODULE_EXT_ENTITY_ACL=ENABLED.
 * A `#version_history` URI fragment which can be used to directly open the modal
   with the full version history of the first entity on the page.
 * `BUILD_MODULE_SHOW_ID_IN_LABEL` build variable with which the showing of