Upgrade black and flake8

requirements-dev.txt

@@ -1,29 +1,30 @@
 appdirs==1.4.3
 attrs==19.3.0
-black==19.10b0
+black==20.8b1
 certifi==2020.6.20
 chardet==3.0.4
-click==7.1.1
+click==7.1.2
 entrypoints==0.3
 fake-bpy-module-2.82==20200218
-flake8==3.7.9
+flake8==3.8.3
 flake8-black==0.1.1
 flake8-bugbear==20.1.4
 flake8-polyfill==1.0.2
 idna==2.10
+importlib-metadata==1.7.0
 mccabe==0.6.1
-parameterized==0.7.4
 mypy==0.782
 mypy-extensions==0.4.3
 pathspec==0.8.0
 pep8-naming==0.10.0
-pycodestyle==2.5.0
-pyflakes==2.1.1
+pycodestyle==2.6.0
+pyflakes==2.2.0
 regex==2020.4.4
 requests==2.23.0
-toml==0.10.0
+toml==0.10.1
 typed-ast==1.4.1
 typing==3.7.4.1
 typing-extensions==3.7.4.2
 unittest-xml-reporting==3.0.2
 urllib3==1.25.9
+zipp==3.1.0