Clojurians Log v2

I added a comparison to using plain derived-atom: https://gist.github.com/martinklepsch/c5a2feacc63ce08565fcffe37951ab64#comparisons

@kauko: I came up with this because of carry's app-spec based approach and because I needed something like this for an app that I'm transitioning to Rum

I also changed the subman name, still more documentation to do 🙂

I like the comparisons section, and new names 👍