lispy.el (lispy-down-slurp): improve

* lispy.el (lispy-down-slurp): End with active region only when it was
  active before
lispy.el (lispy-move-left): improve

* lispy.el (lispy--leftp): New function.
lispy.el (lispy-move-right): improve
lispy.el: fix "i" for Clojure lambda syntax

* lispy.el (lispy--read): Account for "#(...)"
  (lispy--insert-1): Insert Clojure #() properly.
  Replace all "\." with "." unless in string.
lispy.el (lispy-move-left): fix
lispy.el (lispy-defverb): add mode-map to the doc
lispy.el (lispy-to-defun): improve
lispy.el (lispy-down-slurp): improve