travis: Add mypy checker.

roberthoenig · roberthoenig · commit 3af373adc33b · 2017-09-15T13:24:42.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -9,6 +9,8 @@ matrix:
   include:
   - python: "3.6"
     env: TEST_SUITE=lint
+  - python: "3.6"
+    env: TEST_SUITE=run-mypy
 install:
   - tools/provision
   - source zulip-api-py*-venv/bin/activate
