try running tests on python 3.7 on circleci as well

Author: shlomiku

.circleci/config.yml

@@ -72,9 +72,46 @@ jobs:
           path: test-reports3.6.4
           destination: test-reports3.6.4
 
+  build-python37:
+    docker:
+      - image: python:3.7
+    working_directory: ~/repo
+    steps:
+      - run: echo "hello python 3.7"
+      - checkout
+
+      # Download and cache dependencies
+      - restore_cache:
+          keys:
+            - v1-dependencies-{{ checksum "setup.py" }}
+            # fallback to using the latest cache if no exact match is found
+            - v1-dependencies-
+
+      # run tests!
+      # this example uses Django's built-in test-runner
+      # other common Python testing frameworks include pytest and nose
+      # https://pytest.org
+      # https://nose.readthedocs.io
+      - run:
+          name: run tests
+          command: |
+            python setup.py install
+            pip install flake8 && flake8 alpaca_trade_api tests
+            python setup.py test
+
+      - save_cache:
+          paths:
+            - ./eggs
+          key: v1-dependencies-{{ checksum "setup.py" }}
+
+      - store_artifacts:
+          path: test-reports3.7
+          destination: test-reports3.7
+
 workflows:
   version: 2
   build:
     jobs:
       # - build-python27
-      - build-python36
+      - build-python36
+      - build-python37