Also test on Python development versions

stefankoegl · stefankoegl · commit 7854cd70958f · 2017-10-26T13:22:40.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -6,6 +6,9 @@ python:
   - "3.4"
   - "3.5"
   - "3.6"
+  - "3.6-dev"
+  - "3.7-dev"
+  - "nightly"
   - "pypy"
   - "pypy3"
 
