Add python versions

SabineHaas · SabineHaas · commit a2973737359b · 2019-04-01T15:40:04.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,11 @@
 language: python
 
+
+python:
+  - "3.5"
+  - "3.6"
+  - "3.7"
+
 matrix:
   include:
     - os: linux
