Add bin type support.
refactoring.
Add bin type support to pure Python packer.
Add bin type support for fallback Unpacker.
Add tests for str8 and bin types.
Add ext type support to fallback.Unpacker.
code refactoring.
Merge branch 'master' of https://github.com/antocuni/msgpack-python into newspec

Conflicts:
	msgpack/fallback.py
	msgpack/unpack.h
	msgpack/unpack_define.h
	msgpack/unpack_template.h
Merge pull request #77 from msgpack/newspec

[WIP] Support new spec.
fallback: Support pack_ext_type.
Packing ExtType and some cleanup
Support unpacking new types.
cleanup
Add ext_type example to README.
Update README.
Add tests and bugfix.
fallback: support packing ExtType
fix bugs.
Merge pull request #79 from msgpack/newspec

[WIP] Newspec stage 2.
0.4.0