add testing for python3.8 (#206)

Author: dnozay

.travis.yml

@@ -16,9 +16,11 @@ matrix:
       env: TOXENV=py35
     - python: 3.6
       env: TOXENV=py36
-    - python: 3.7-dev
+    - python: 3.7
       env: TOXENV=py37
-    - python: 3.7-dev
+    - python: 3.8
+      env: TOXENV=py38
+    - python: 3.8-dev
       env: TOXENV=pytest
     - os: linux
       dist: xenial

tox.ini

@@ -11,6 +11,7 @@ envlist = begin,py{27,py,py3,35,36,37},pytest,py27-django{lts,curr},end,quality
 3.5 = py35
 3.6 = py36
 3.7 = py37,pytest
+3.8 = py38
 
 [testenv]
 deps =