cython compilation failing w/ python3.4
Python 3.4.3
Cython version 0.21.1
gcc version 4.9.2 (Ubuntu 4.9.2-10ubuntu13) 
 Try upgrading your Cython?
 Using Python 3.5 and Cython 0.23.4 no issues.
 Using Python 3.4.3 and Cython 0.23.4 also no issues
 So that is to confirm that it works correctly after upgrading your Cython?
 the same error
$ cython -V
Cython version 0.23.4
$ python -V
Python 2.7.6
`------------------------------------------------------------

...

```
cdef:

    set model_set = set(models)

    set seen = set()

    list accum = []



for model in sorted(model_set, key=_sort_key, reverse=True):

                                           ^
```

---

playhouse/speedups.pyx:318:48: Cannot convert 'tuple (object)' to Python object

building 'playhouse._speedups' extension

creating build/temp.linux-x86_64-2.7

creating build/temp.linux-x86_64-2.7/playhouse

x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c playhouse/speedups.c -o build/temp.linux-x86_64-2.7/playhouse/speedups.o

playhouse/speedups.c:1:2: error: #error Do not use this file, it is the result of a failed Cython compilation.

 #error Do not use this file, it is the result of a failed Cython compilation.

  ^

error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
`

Will update with more details as I find time.  Pinning to peewee 2.7 for now

```
  Running setup.py install for peewee
    Complete output from command /vagrant/.tox/py34/bin/python3.4 -c "import setuptools, tokenize;__file__='/tmp/pip-build-gasvyut8/peewee/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-mczyxnc7-record/install-record.txt --single-version-externally-managed --compile --install-headers /vagrant/.tox/py34/include/site/python3.4/peewee:
    running install
    running build
    running build_py
    running build_ext
    cythoning playhouse/speedups.pyx to playhouse/speedups.c
    building 'playhouse._speedups' extension
    x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -fPIC -I/usr/include/python3.4m -I/vagrant/.tox/py34/include/python3.4m -c playhouse/speedups.c -o build/temp.linux-x86_64-3.4/playhouse/speedups.o
    playhouse/speedups.c:1:2: error: #error Do not use this file, it is the result of a failed Cython compilation.
     #error Do not use this file, it is the result of a failed Cython compilation.
      ^

    Error compiling Cython file:
    ------------------------------------------------------------
    ...
        cdef:
            set model_set = set(models)
            set seen = set()
            list accum = []

        for model in sorted(model_set, key=_sort_key, reverse=True):
                                                   ^
    ------------------------------------------------------------

    playhouse/speedups.pyx:318:48: Cannot convert 'tuple (object)' to Python object
    error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
```
