Existing Wording: entry.response.empty() or type = 'batch-response' or type = 'transaction-response'

Proposed Wording: entry.response.empty() or type = 'batch-response' or type = 'transaction-response' or type = 'history'

Comment:

You have to have a response in history when doing a delete - that's the only way to get the timestamp and version id. It's also shown in the examples. We'd have caught this if we'd had an actual example Bundle showing history - suggest that might be a good idea.

Summary:

Allow history in bdl-4 invariant