Display missing JSON schema fields

At the moment, if you have a schema containing more fields than the json object has, the missing fields do not appear in the tree view. You get a validation error on the root but the missing field itself does not appear.


It would be a great feature to be able to display all missing fields. In this case the value of such a field could be empty, which would show a placeholder value.
Diffing/merging the json and the schema could be outside of jsoneditor, but it would be a useful feature to have in jsoneditor.