tox / travis: also test on Python 3.6

.travis.yml

@@ -16,6 +16,10 @@ matrix:
           os: linux
           dist: trusty
           env: TOXENV=py35
+        - python: 3.6
+          os: linux
+          dist: trusty
+          env: TOXENV=py36
         - python: 3.5
           os: linux
           dist: trusty
@@ -28,6 +32,10 @@ matrix:
           os: osx
           osx_image: xcode6.4
           env: TOXENV=py35
+        - language: generic
+          os: osx
+          osx_image: xcode6.4
+          env: TOXENV=py36
     allow_failures:
         - os: osx
 

tox.ini

@@ -2,7 +2,7 @@
 # fakeroot -u tox --recreate
 
 [tox]
-envlist = py{34,35},flake8
+envlist = py{34,35,36},flake8
 
 [testenv]
 # Change dir to avoid import problem for cython code. The directory does