Update to 5.13

Upstream changes:
5.13  2014-07-13
  - Added json_like, json_message_like, json_message_unlike and json_unlike
    methods to Test::Mojo.
  - Improved HTML5.1 compliance of Mojo::DOM::HTML.
  - Fixed bug where Mojo::UserAgent would keep too many connections alive.
  - Fixed Mojo::Reactor::Poll bug where watchers were active after they have
    been removed. (jberger)

5.12  2014-07-04
  - Fixed a few multipart form handling bugs.
  - Fixed AUTOLOAD bug in Mojo::Collection where it would behave differently
    than calling pluck directly.

5.11  2014-07-02
  - Moved reverse_proxy attribute from Mojo::Server::Daemon to Mojo::Server.
  - Added delay and inactivity_timeout helpers to
    Mojolicious::Plugin::DefaultHelpers.
  - Improved error method in Mojolicious::Validator::Validation to return
    field names when called without arguments.
  - Fixed "0" value bug in Mojo::UserAgent::Transactor.

5.10  2014-06-28
  - Added cleanup attribute to Mojo::Server::Prefork.
  - Improved Mojo::Server::Prefork to keep sending heartbeat messages when
    stopping gracefully.
  - Fixed small bug where Mojo::Server::Daemon was too eager to reconfigure
    Mojo::IOLoop.
  - Fixed small bug where Hypnotoad would clean up process id and lock files
    too early.

5.09  2014-06-24
  - Improved .ep templates to make the current controller available as $c.

5.08  2014-06-17
  - Added reset method to Mojo::IOLoop.
  - Added reset method to Mojo::Reactor.
  - Added reset method to Mojo::Reactor::Poll.

5.07  2014-06-13
  - Fixed RFC 7230 compliance bugs in Mojo::Headers.

5.06  2014-06-11
  - Added deserialize and serialize attributes to Mojolicious::Sessions.
  - Improved redirect_to to behave more like url_for.
  - Fixed bug in Mojo::UserAgent where HTTP/1.0 connections were sometimes
    kept alive.

5.05  2014-06-08
  - Fixed parsing of header fields with single character names in
    Mojo::Headers. (crab)


(wen)