Pinning mypy and running it against different python versions (#141)

.circleci/config.yml

@@ -86,9 +86,8 @@ jobs:
             - run:
                 name: verify typehints
                 command: |
-                  pip install mypy
                   export PATH="/home/circleci/.local/bin:$PATH"
-                  mypy --config-file mypy.ini --python-version 3.5 ldclient/*.py testing/*.py
+                  mypy --config-file mypy.ini ldclient testing
       - store_test_results:
           path: test-reports
       - store_artifacts:

mypy.ini

@@ -1,3 +1,2 @@
 [mypy]
-ignore_missing_imports = true
-python_version = 3.5
+ignore_missing_imports = true

test-requirements.txt

@@ -6,4 +6,5 @@ coverage>=4.4
 jsonpickle==0.9.3
 pytest-cov>=2.4.0
 codeclimate-test-reporter>=0.2.1
-pytest-mypy==0.7
+pytest-mypy==0.7
+mypy==0.800