Log Message:
Update msgpack-python to 0.4.0.

0.4.0
=====
:release date: 2013-10-21

Inconpatible Changes
--------------------

* Raises TypeError instead of ValueError when packer receives unsupported type.

Changes
-------

* Support New msgpack spec.

0.3.0
=====

Inconpatible Changes
--------------------

* Default value of ``use_list`` is ``True`` for now. (It was ``False`` for 0.2.x)
  You should pass it explicitly for compatibility to 0.2.x.
* `Unpacker.unpack()` and some unpack methods now raise `OutOfData` instead of
  `StopIteration`. `StopIteration` is used for iterator protocol only.

Changes
-------
* Pure Python fallback module is added. (thanks to bwesterb)
* Add ``.skip()`` method to ``Unpacker`` (thanks to jnothman)
* Add capturing feature. You can pass the writable object to
  ``Unpacker.unpack()`` as a second parameter.
* Add ``Packer.pack_array_header`` and ``Packer.pack_map_header``.
  These methods only pack header of each type.
* Add ``autoreset`` option to ``Packer`` (default: True).
  Packer doesn't return packed bytes and clear internal buffer.
* Add ``Packer.pack_map_pairs``. It packs sequence of pair to map type.

0.2.4
=======
:release date: 2012-12-22

Bugs fixed
----------

* Fix SEGV when object_hook or object_pairs_hook raise Exception. (#39)

0.2.3
=======
:release date: 2012-12-11

Changes
-------
* Warn when use_list is not specified. It's default value will be changed in 0.3.

Bugs fixed
-----------
* Can't pack subclass of dict.

0.2.2
=======
:release date: 2012-09-21

Changes
-------
* Add ``use_single_float`` option to ``Packer``. When it is true, packs float
  object in single precision format.

Bugs fixed
-----------
* ``unpack()`` didn't restores gc state when it called with gc disabled.
  ``unpack()`` doesn't control gc now instead of restoring gc state collectly.
  User can control gc state when gc cause performance issue.

* ``Unpacker``'s ``read_size`` option didn't used.

0.2.1
=======
:release date: 2012-08-20

Changes
-------
* Add ``max_buffer_size`` parameter to Unpacker. It limits internal buffer size
  and allows unpack data from untrusted source safely.

* Unpacker's buffer reallocation algorithm is less greedy now. It cause perforamce
  derease in rare case but memory efficient and don't allocate than \ 
``max_buffer_size``.

Bugs fixed
----------
* Fix msgpack didn't work on SPARC Solaris. It was because choosing wrong byteorder
  on compilation time. Use ``sys.byteorder`` to get correct byte order.
  Very thanks to Chris Casey for giving test environment to me.

0.2.0
=======
:release date: 2012-06-27

Changes
-------
* Drop supporting Python 2.5 and unify tests for Py2 and Py3.
* Use new version of msgpack-c. It packs correctly on big endian platforms.
* Remove deprecated packs and unpacks API.

Bugs fixed
----------
* #8 Packing subclass of dict raises TypeError. (Thanks to Steeve Morin.)