Log Message:
Update to 6.08:

6.08   2015-07-10
    - Resolve new uninitialized warning from
      HTTP::Request::Common::request_type_with_data (RT#105787)

6.07   2015-07-09

    - Allow subclasses to override the class of parts - it used to be
      hardcoded to HTTP::Message. (Gisle Aas, RT#79239)

    - Added support for is_client_error, is_server_error to HTTP::Response
      (Karen Etheridge)

    - Added flatten interface to HTTP::Headers (Tokuhiro Matsuno, GH#5)

    - Allow PUT to pass content data via hashrefs just like with POST (Michael
      Schilli, GH#9)

    - Fix for "Content-Encoding: none" header (Gisle Aas, RT#94882)

    - Add support for HTTP status 308, defined in RFC 7238 (Olivier Mengué,
      RT#104102)

    - drop the use of "use vars" (Karen Etheridge)