rename pep8 linter to pycodestyle

[jeffwidman]

The pep8 tool was renamed to pycodestyle.

Historical background detailed in this ticket (from before I switched from Atom to VSCode): AtomLinter/linter-pycodestyle#55

The python.linting.pep8* options in this linter should probably be renamed to python.linting.pycodestyle* to reduce confusion in the future.

Happy to help update the extension, but I'm not sure of your policy on deprecating/migrating settings to new names...??

[brettcannon]

In this instance we would probably implement the new options and then leave the old ones deprecated for several releases until removing them.

[mizzao]

See also DonJayamanne/pythonVSCode#808

[arnauldvm]

I managed to workaround like this:

• instal pycodestyle (no need to install pep8)
• add this to settings.json:
  "python.linting.pep8Path": "pycodestyle", // workaround to use pycodestyle instead of pep8
• select pep8 as linter

[kimadeline]

✅ Validated:

• No pep8* settings, pycodestyle settings are available (in the UI and in a local .vscode/settings.json)
• Setting up linting with pycodestyle for the first time works
• Migrating from pep8 to `pycodestyle works
• Linting with pycodestyle works