Problem: #74 setuptools on a locale='C' host can't parse cfg

Solution: Fixed in setuptools==40.7.0 updated setup.py to make that a
minumum requirement.

Upstream bug: pypa/setuptools#1062

Author: Sekenre

setup.py

@@ -46,7 +46,7 @@
         'local_scheme': 'dirty-tag'
     },
     setup_requires=[
-        'setuptools >= 36.2.7',
+        'setuptools >= 40.7.0',
         'setuptools_scm >= 1.7.0'
     ],
     **kwargs