Merge pull request #24 from adamtheturtle/requires-io-master

[requires.io] dependency update on master branch

Author: adamtheturtle

dev-requirements.txt

@@ -5,7 +5,7 @@ dulwich==0.19.11
 flake8-commas==2.0.0
 flake8-quotes==2.0.1
 flake8==3.7.7
-isort==4.3.17
+isort==4.3.20
 mypy==0.701
 mypy-mypyc==0.670
 pip_check_reqs==2.0.3
@@ -14,8 +14,8 @@ pyenchant==2.0.0
 pygithub==1.43.7
 pylint==2.3.1
 pyroma==2.4
-pytest-cov==2.6.1  # Measure code coverage
-pytest==4.4.1
+pytest-cov==2.7.1  # Measure code coverage
+pytest==4.5.0
 twine==1.13.0
 vulture==1.0
 yapf==0.27.0