Clean up and declare (correct, tested) python versions

Author: Paul Maschhoff

.travis.yml

@@ -21,7 +21,6 @@ install:
   - make image
 script:
   - make test-tox-ext
-  - docker-compose run --rm pychemy-${TOXENV} pip --version
 before_deploy:
   - sudo make clean
 deploy:

setup.py

@@ -24,7 +24,7 @@
     'Natural Language :: English',
     'Operating System :: OS Independent',
     'Programming Language :: Python :: 2.7',
-    'Programming Language :: Python :: 3.4',
+    'Programming Language :: Python :: 3.5',
     'Topic :: Scientific/Engineering :: Artificial Intelligence',
     'Topic :: Scientific/Engineering :: Artificial Life',
     'Topic :: Scientific/Engineering :: Bio-Informatics',
@@ -34,6 +34,7 @@
     'Topic :: Scientific/Engineering :: Visualization',
     'Topic :: Software Development :: Libraries :: Python Modules',
   ],
+  python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4',
 
   packages=['pychemy'],
   include_package_data=True,