lispy.el (lispy-tag-arity): update with `lispy-defverb'
lispy.el: whitespace
lispy.el (lispy-verbose-verbs): new custom

* lispy.el (lispy-defverb): Add an option to display a hint in the echo
area when the new minor mode is active.
lispy.el (lispy--fetch-tags): improve

* lispy.el (lispy--fetch-tags): make sure that semanticdb
  finds the tags. It can fail if the path isn't absolute.