Update 2.52 to 2.56
  (2.55 and 2.56 has no description on Changelog)
-------------------
2.54    - fixed rt.cpan.org#39814. changed the order of pre-processing
          in _read(): 1) remove comments, 2) check for continuation,
          3) remove empty lines.

2.53    - applied patch rt.cpan.org#68153, which adds a find() method to
          Config::General::Extended.

        - fixed rt.cpan.org#79869 (in fact it has been fixed in 2.52
          but I forgot to mention it here).

        - applied spelling fixes rt.cpan.org 87072+87080.

        - fixed rt.cpan.org#89379

(mef)