Log out the data when dry running

It is really quite important to see what data should have been sent when
the user is dry running.
Merge pull request #38 from alphagov/feature/data-out-in-dry-run

Log out the data when dry running
Remove logging of response text

We don't need to know the raw response all of the time and it is hurting
stagecraft response times.
Bump version to include fix