Cython should be added as a dependency

[metasyn]

Hey Guys,

Just attempting to install in a fresh virtualenv:

➜ pip install dask-ml
Collecting dask-ml
  Downloading dask-ml-0.3.1.tar.gz (262kB)
    100% |████████████████████████████████| 266kB 1.4MB/s 
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/cy/fp9dph0x14x9s7fszwjjjh4c0000gn/T/pip-build-HNpvGT/dask-ml/setup.py", line 5, in <module>
        from Cython.Build import cythonize
    ImportError: No module named Cython.Build
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/cy/fp9dph0x14x9s7fszwjjjh4c0000gn/T/pip-build-HNpvGT/dask-ml/

Seems like pip install Cython was all I needed - this should be added to the requirements in setup.py, no?

[TomAugspurger]

I apparently forgot to upload wheels for the last release. Doing that now.

I'm not sure about adding it to the requirements, since it's only a build requirement. I'll check what the latest recommendation is.

[TomAugspurger]

Wheels are up on PyPI now: https://pypi.org/project/dask-ml/#files

[metasyn]

Thanks Tom! That was fast!