Introducing: NullLogger #38 [ci skip]
Simple Request Logging #38 [ci skip]
Preprocessor now does JSON [ci skip]
Logging Responses #38 [ci skip]
Pulling JSON Parsing into Response Preprocessor [ci skip]
Removing FaradayMiddleware and getting back to Metrics

The last few commits skipped CI, because of the heavy restructuring.
Now I worked out the kinks.
Also FaradayMiddleware is now gone as a dependency, it is no longer
needed.
1.8: Backports and a little oddity

It is totally required at runtime. I somehow forgot that.
Locked to 2.8.2 right now because of Devtools, even though
the version has a bug that affects us.
Finally switching from JSON to MultiJson