do type checking on 3.7, linting on 3.6

- python 3.6 chokes on the pyqt .pyi files
- need to check unit tests on 3.6 as well, as anki/ must run on 3.6

.travis.py36.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -e
+
+echo "building ui..."
+./tools/build_ui.sh
+
+echo "running unit tests..."
+nosetests ./tests
+
+echo "linting..."
+./tools/lint.sh

.travis.py37.sh

@@ -11,6 +11,3 @@ nosetests ./tests
 echo "type checking..."
 ./tools/typecheck-setup.sh
 ./tools/typecheck.sh
-
-echo "linting..."
-./tools/lint.sh

.travis.yml

@@ -1,7 +1,6 @@
 dist: xenial
 language: python
-python:
-  - "3.6"
+os: linux
 install:
   - sudo apt-get update
   - sudo apt-get install portaudio19-dev
@@ -9,4 +8,9 @@ install:
   - pip install -r requirements.dev
   - pip install pyqt5 pyqtwebengine
 
-script: ./.travis.sh
+jobs:
+  include:
+    - python: 3.6
+      script: ./.travis.py36.sh
+    - python: 3.7
+      script: ./.travis.py37.sh