Clojurians Log v2

Several Canary projects were failing due to the default use of Node 6 in Travis CI and its inability to cope with the generated code. Setting them to use the latest LTS (currently 12) fixes them.

nice that's a pretty ancient version of Node at this point

There are still a few failures left in Canary that I'm attempting to sort through. There is also a CI failure with ClojureScript itself which we were not seeing for some reason (AppVeyor, but not Travis was updating). I'm going to put a patch together---I think it is trivial stuff related to REPL environment removal.

k thanks