DOC update CHANGELOG

CHANGELOG.md

@@ -8,6 +8,22 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added (for new features, dependecies etc.)
 
+### Changed (for changes in existing functionality)
+
+### Deprecated (for soon-to-be removed features) 
+
+### Removed (for now removed features)
+
+### Fixed
+
+### Security (in case of vulnerabilities)
+
+## [0.3.1]- 2021-06-15
+
+This is the last Bootstrap-3 compatible release.
+
+### Added (for new features, dependecies etc.)
+
 * Displaying and interacting with the entity state.
 * Change password functionality for users of the internal user source.
 * Visually highlighted drop zones for properties and parents in the edit_mode.
@@ -15,10 +31,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   the module documentation for more information.
 
 ### Changed (for changes in existing functionality)
+
 - The heading attributes datatype, path, checksum and size are now placed 
   in a `details` html element.
 
-### Deprecated (for soon-to-be removed features) 
+### Deprecated (for soon-to-be removed features)
+
+* Any bootstrap-3 dependencies. Please prepare upgrading to bootstrap-5 with the next release.
 
 ### Removed (for now removed features)