Add mypy for type checking

Author: wdv4758h

.travis.yml

@@ -18,13 +18,14 @@ matrix:
 
 install:
     - "pip install -U pip"
-    - "pip install -U pytest pytest-runner flake8"
+    - "pip install -U pytest pytest-runner flake8 mypy-lang"
     - "pip install ."
     - "pip freeze"
 
 script:
     - python setup.py test
     - python setup.py flake8 || true
+    - mypy everywhere
 
 notifications:
     email: false

setup.py

@@ -14,7 +14,7 @@
     author_email='[email protected]',
     description=('A template project for Python'),
     license='BSD',
-    setup_requires=['pytest-runner', 'flake8'],
+    setup_requires=['pytest-runner', 'flake8', 'mypy-lang'],
     tests_require=['pytest'],
     install_requires=requires,
     packages=find_packages(exclude=exclude_from_packages),