Py-ART Now Uses Setuptools

[sherma...@gmail.com]

Hello!

Py-ART now uses setuptools instead of disutils in its installation. If using a pip install or conda install this shouldn't have much effect. However if you are using a local install of Py-ART, whether pip install -e . development of python setup.py install you will need cython for the cythonizing of the pyx files found in Py-ART. This will help avoid disutil numpy errors in the future and more.

Thanks for your time, cheers!

Zach S.