ref #7195 introducing the concept of EditorActionContext stacks to facilitate creating blocking relations
ref #7204 refactoring editor events and introducing generic EntityEditorActionEvent
removing deprecation annotations
ref #6169 RelatedEntityListSelect (ToOneRelatedEntityField) edit and select working, add blocked by #6673
ref #6612 introducing EntityChangeEvent and generalizing Event class hierarchy
ref #6169 renaming EntityEvents into EditorEvents to better express the purpose