Hiredis

* Upgrade hiredis to 0.13.3
* Add optional "shouldDecode" argument to Reader.gets() (see 77)
* Add a "has_data" method to Reader objects (see 78)
* Fix non-utf8 reply parsing causing segmentation fault in Python 3 (see 73)
* Rename `state` to `hiredis_py_module_state` to avoid conflicts (see 72)
* Expose len method to retrieve the buffer length (see 61)
* Fix crash when custom exception raise error (on init) (see 57)
* incref before PyModule_AddObject which steals references (see 48)
* Sort list of source files to allow reproducible building (see 47)

* Allow usage of setuptools
* Upgrade to latest hiredis including basic Windows support
* Expose hiredis maxbuf settings in python

* Updated with hiredis 0.12.1 — now only uses Redis parser, not entire library (30).

* Fix memory leak when many reader instances are created (see 26).

* Allow any buffer compatible object as argument to feed (see 22).

* Allow `protocolError` and `replyError` to be any type of callable (see 21).