Handle CNAMEs with NODATA result
Add a parser to inject messages from text files
Add CNAME unit tests covering incomplete responses
Drop the priming phase

The priming essentially duplicated the key finding. This can be
avoided by simply starting the key finding with the trust anchor.
Remove dead code
Use the same dclass in received and constructed DS for verification
Validate xNAME answers like any other

As part of this the state-machine was removed to perform multiple
findKey phases - one for each signer of an RRset.
Validate that CNAMEs following a DNAME are correctly synthesized
Remove dead code
Fake responses for wildcard-expansion tests on the fly

This avoids outdated signatures.
Fake responses for non-existence checks on the fly
Remove unused files
Update todo
Add more DNAME unit tests