message: Support accented chars in index
diff: _ = require 'underscore'
  +removeDiacritics = require('diacritics').remove
  # Lifted from:
  # https://raw.githubusercontent.com/artsy/artsy-backbone-mixins/master/lib/a_to_z.coffee
  @@ -21,7 +22,7 @@ module.exports =
  if /^\d$/.test letter
  '0-9'
  else
  - letter.toUpperCase()
  + removeDiacritics(letter).toUpperCase()
  #
  # Groups collection output in a format suitable for rendering in an A-Z list with
  