Add Eastwood, fix api.handler and set project defaults for lein-cloverage

[kenan-rhoton]

Description

Added Eastwood and improved some linting stuff

Issues Resolved

This is a further improvement on #131

Details

I've added Eastwood as a project dependency, cleaned up the parts of api.handler it was complaining about, added it to travis and finally set up good defaults for Cloverage.

Hotspots

api.handler should be even more readable, and the cloverage defaults should make sense (failing if under 95% coverage, basically)