add python3.7 to the classifier list, fixes #325

Author: RonnyPfannschmidt

setup.py

@@ -103,6 +103,7 @@ def parse(root):
         "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: 3.7",
         "Topic :: Software Development :: Libraries",
         "Topic :: Software Development :: Version Control",
         "Topic :: System :: Software Distribution",

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist=py{27,34,35,36,37}-test,flake8,check_readme,py{27,36}-selfcheck
+envlist=py{27,34,35,36,37}-test,flake8,check_readme,py{27,37}-selfcheck
 
 [pytest]
 filterwarnings=error