Use squiggly-clojure to lint Clojure with eastwood

Requires a dependency in your .lein/profiles.clj:

    [acyclic/squiggly-clojure "0.1.0-SNAPSHOT"]
Add comment macro
Remove comment macro from personal settings
Proper loading for setup-flycheck
Merge remote-tracking branch 'upstream/master'
Zen of Emacs