* CI: Add autopep8 linter
Currently, we have autopep8 as part of pre-commit-hook. To ensure
consistent behaviour, we should have it in CI as well.
Moreover, pre-commit-hook contains a double-quote-string-fixer hook
which changes all double quotes to single quotes, but I do observe
some PRs with massive changes that do the opposite way. I suspect
that these authors 1) disable or circumvent the pre-commit-hook,
and 2) have other linters such as black in their IDE, which
automatically change all single quotes to double quotes. This
has caused a lot of unnecessary diff, made review really hard,
and led to a lot of conflicts.
* Use -diff for autopep8
* autopep8: Freeze version in CI
* Ultimate fix
* Remove pep8 long line disable workaround
* Fix lint.yml
* Fix all files under opendevin and agenthub
