cl -> cl-lib
refactoring, es-next-printable-character-pos -> es-next-visible-character-at-pos
cl -> cl-lib, changed es-unsaved-buffer-list to return a list of buffers instead of a names
better routines for functions dealing with symbol regions, es-map-buffer no longer takes an argument
removed es-string-begins-with-p, since the built-in string-prefix-p does the same thing
bug fix
minor fixes
refactoring