Plug-in for flake 8 to check the PEP-8 naming conventions
copied from cf-staging / pep8-namingconda install conda-forge::pep8-naming
conda install conda-forge/label/cf201901::pep8-naming
conda install conda-forge/label/cf202003::pep8-naming
conda install conda-forge/label/gcc7::pep8-naming