anchor.diff:      # see http://en.wikipedia.org/wiki/Zero-width_joiner
       \\u200D => ALPHANUM
   --------------------------------------------------
  +
  +NOTE: Using a tokenizer like the `standard` tokenizer may interfere with
  +the `catenate_*` and `preserve_original` parameters, as the original
  +string may already have lost punctuation during tokenization.  Instead,
  +you may want to use the `whitespace` tokenizer.
  +
  
positive.code:     If `true` includes original words in subwords:
      "500-42" => "500-42" "500" "42". Defaults to `false`.
  
  `split_on_numerics`:: 
      If `true` causes "j2se" to be three tokens; "j"
      "2" "se". Defaults to `true`.
  
  `stem_english_possessive`:: 
      If `true` causes trailing "'s" to be
      removed for each subword: "O'Neil's" => "O", "Neil". Defaults to `true`.
  
  Advance settings include:
  
  `protected_words`:: 
      A list of protected words from being delimiter.
      Either an array, or also can set `protected_words_path` which resolved
      to a file configured with protected words (one on each line).
      Automatically resolves to `config/` based location if exists.
  
  `type_table`:: 
      A custom type mapping table, for example (when configured
      using `type_table_path`):
  
  [source,js]
  --------------------------------------------------
      # Map the $, %, '.', and ',' characters to DIGIT 
      # This might be useful for financial data.
      $ => DIGIT
      % => DIGIT
  
negative.code: 
  Parameters include:
  
  `generate_word_parts`::
      If `true` causes parts of words to be
      generated: "PowerShot" => "Power" "Shot". Defaults to `true`.
  
  `generate_number_parts`::
      If `true` causes number subwords to be
      generated: "500-42" => "500" "42". Defaults to `true`.
  
  `catenate_words`::
      If `true` causes maximum runs of word parts to be
      catenated: "wi-fi" => "wifi". Defaults to `false`.
  
  `catenate_numbers`::
      If `true` causes maximum runs of number parts to
      be catenated: "500-42" => "50042". Defaults to `false`.
  
  `catenate_all`::
      If `true` causes all subword parts to be catenated:
      "wi-fi-4000" => "wifi4000". Defaults to `false`.
  
  `split_on_case_change`::
      If `true` causes "PowerShot" to be two tokens;
      ("Power-Shot" remains two parts regards). Defaults to `true`.
  
  