add py38 to test suite

Author: kvesteri

.travis.yml

@@ -6,6 +6,7 @@ python:
   - 3.5
   - 3.6
   - 3.7
+  - 3.8
   - pypy
   - pypy3
 install:

setup.py

@@ -61,6 +61,7 @@ def get_version():
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Topic :: Internet :: WWW/HTTP :: Dynamic Content',