Merge pull request #991 from adamtheturtle/pyup-update-sphinx-1.8.5-to-2.0.1

Update sphinx to 2.0.1

Author: adamtheturtle

dev-requirements.txt

@@ -19,7 +19,7 @@ pyroma==2.4  # Packaging best practices checker
 pytest-cov==2.6.1  # Measure code coverage
 pytest==4.4.0  # Test runners
 PyYAML==5.1
-Sphinx==1.8.5
+Sphinx==2.0.1
 sphinx-autodoc-typehints==1.6.0
 sphinxcontrib-spelling==4.2.1
 twine==1.13.0