add toggle-clj-keyword-string
"namespace" the toggle fn. delete the smaller fns (for fear of clashes
with other live stuff). move the util-ish fn to util-fns.el. convert
recursion to a while, to avoid stack to deep errors
revert the changes made to 'live' packs.
Merge pull request #107 from jaycfields/master

add toggle string keyword to clojure.conf
Remove pretty symbols λ, ƒ and ∈