Update xo to the latest version 🚀

[greenkeeper]

Version 0.23.0 of xo was just published.

Dependency	xo
Current Version	0.22.0
Type	devDependency

The version 0.23.0 is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

It might be worth looking into these changes and trying to get this project onto the latest version of xo.

If you have a solid test suite and good coverage, a passing build is a strong indicator that you can take advantage of these changes directly by merging the proposed change into your project. If the build fails or you don’t have such unconditional trust in your tests, this branch is a great starting point for you to work on the update.

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Release Notes

v0.23.0

Highlights

• In v0.22.0, we added support for .ts and .tsx extensions by default. This caused a lot of problems for non-TS projects, so it has been reverted pending a better solution.
• The quotes rule is now set to disallow using template literals when you're not using any interpolation. xojs/eslint-config-xo@ea693f3
• Removed the no-use-before-define rule. It has too many false-positives. xojs/eslint-config-xo@1257597

New rules

• require-await
• unicorn/prefer-exponentiation-operator
• unicorn/catch-error-name (See this thread if you're wondering why error is preferred over err)

All changes

v0.22.0...v0.23.0

Commits

The new version differs by 6 commits.

• f435698 0.23.0
• e29cacb Update dependencies
• 594f7f4 Remove ts and tsx from default extensions
• 4acb8f0 Rename main.js to cli-main.js for clarity
• 50a97fd Tiny travis.yml tweak
• be0e8cd Fix typo in readme (#350)

See the full diff

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