Add test suites for new python versions (#61)

* Remove py2.6 classifier since its not tested
* Add new python classifiers

Author: dimon222

.travis.yml

@@ -4,6 +4,10 @@ language: python
 
 matrix:
   include:
+    - python: 3.8
+      env: TOXENV=py38
+    - python: 3.7
+      env: TOXENV=py37
     - python: 3.6
       env: TOXENV=py36
     - python: 3.5

setup.py

@@ -49,10 +49,11 @@ def find_version(*file_paths):
         'Intended Audience :: Developers',
         'License :: OSI Approved :: BSD License',
         'Operating System :: OS Independent',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
         'Topic :: System :: Distributed Computing',
     ],
 )

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,py35,py36
+envlist = py27,py35,py36,py37,py38
 
 [testenv]
 deps =