Bug with Aggregate OnFailure Hooks

[eoincampbell]

There's an issue in both the async & non-async aggregate hooks which results in the hook sending back the valid rather then invalid links.

See: https://github.com/warden-stack/Warden/blob/master/src/Warden/Core/IIterationProcessor.cs#L251

I'll submit a PR for this shortly.

[spetz]

Thanks, waiting for the PR then :).

[eoincampbell]

Hey @spetz have a couple of PRs coming.

1. Fix for this issue
2. New Integration for SMTP emails
3. A new version of an IIteratorProcessor that deals with the other bug

One thing I've struggled to get working is the tests. Running dotnet test in the test project directory complains that there's no test adapter.

Do I need to get some external adapter for the Machine.Specification tests?