Clojurians Log v2

I made some improvements to the hooks plugin, and added a hooks chapter to the docs https://github.com/lambdaisland/kaocha/blob/master/doc/10_hooks.md

Also extended the plugin docs a little bit https://github.com/lambdaisland/kaocha/blob/master/doc/09_extending.md

Plugins and hooks I think are really what makes Kaocha so powerful and adaptable to many different scenarios. Hopefully these docs will help for people to solve their problems with Kaocha.

kaocha-cloverage 1.0.56 , which updates cloverage to 1.1.3. Many thanks to the cloverage contributors and maintainers, we're getting a bunch of improvements for free.