v0.0.49

What's Changed

• Create CODE_OF_CONDUCT.md by @charliermarsh in #287
• Add CONTRIBUTING.md by @charliermarsh in #288
• Implement flake8-super check by @sobolevn in #291
• Create .editorconfig by @sobolevn in #290

Full Changelog: v0.0.48...v0.0.49