Merge branch 'master' into pyup-update-yapf-0.28.0-to-0.29.0

Author: adamtheturtle

dev-requirements.txt

@@ -23,7 +23,7 @@ PyYAML==5.1.2
 Sphinx==2.2.1
 sphinx-autodoc-typehints==1.10.3
 sphinxcontrib-spelling==4.3.0
-twine==3.1.0
+twine==3.1.1
 versioneer==0.18
 vulture==1.2
 VWS-Python-Mock==2019.9.28.0