pytest.PytestDeprecationWarning: The 'message' parameter is deprecated.

[dimitern]

I've found this while working on other fixes, and it seems to come from the recently released pytest-5.0.0. The warning is visible in the TravisCI build logs:
https://travis-ci.org/socialcopsdev/camelot/jobs/552447891#L780

There's more information about it here:
https://docs.pytest.org/en/4.6-maintenance/deprecations.html#message-parameter-of-pytest-raises

I'll propose a PR to fix this, as I've already included it in my previous PR #351 .

[vinayak-mehta]

Fixed in #2.