Get rid of handle_errors
Use a namedtuple to keep errors in
Style tweaks
pep8
raise InternalError
Merge pull request #707 from public/consume-errors

Get rid of handle_errors
Consume errors on InvalidSignature
Merge pull request #708 from public/invalid-sig-errors

Consume errors on InvalidSignature
Merge branch 'master' into dsa
Corrected typo