Use setuptools to build egg package.

Author: methane

setup.py

@@ -5,8 +5,8 @@
 import os
 import sys
 from glob import glob
-from distutils.core import setup, Extension
 from distutils.command.sdist import sdist
+from setuptools import setup, Extension
 
 try:
     from Cython.Distutils import build_ext