Initial Update (#2)

* Update flake8 from 3.3.0 to 3.4.1

* Update mypy from 0.511 to 0.521

* Update pyflakes from 1.5.0 to 1.6.0

* Update pytest from 3.1.3 to 3.2.2

* Update pytest-mock from 1.6.0 to 1.6.2

* Update pytest-sugar from 0.8.0 to 0.9.0

Author: pyup-bot

tests/requirements.txt

@@ -1,15 +1,15 @@
 coverage==4.4.1
 docutils==0.14
-flake8==3.3.0
+flake8==3.4.1
 isort==4.2.15
-mypy==0.511
+mypy==0.521
 pycodestyle==2.3.1
-pyflakes==1.5.0
+pyflakes==1.6.0
 Pygments==2.2.0
-pytest==3.1.3
+pytest==3.2.2
 pytest-cov==2.5.1
 pytest-isort==0.1.0
-pytest-mock==1.6.0
-pytest-sugar==0.8.0
+pytest-mock==1.6.2
+pytest-sugar==0.9.0
 pytest-toolbox==0.2
 numpy  # pyup: ignore