harper 0.18.0

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Created by brew bump

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Created with brew bump-formula-pr.

release notes

## What's Changed

fix two grammatical errors by @hippietrail in fix two grammatical errors Automattic/harper#481
Reword description of "that which" to avoid ironic redundancy by @hippietrail in Reword description of "that which" to avoid ironic redundancy Automattic/harper#479
feat(#422): add same than -> same as matcher trigger by @grantlemons in feat(#422): add same than -> same as matcher trigger Automattic/harper#453
missing definite article, comma placement by @hippietrail in missing definite article, comma placement Automattic/harper#480
Improvements to PluralConjugate by @elijah-potter in Improvements to PluralConjugate Automattic/harper#474
correct Valentine's Day by @hippietrail in correct Valentine's Day Automattic/harper#491
typo in zed integration doc by @hippietrail in typo in zed integration doc Automattic/harper#490
feat(core): created linter for #426 by @elijah-potter in feat(core): created linter for #426 Automattic/harper#452
I missed a lets/let's mistake in a comment by @hippietrail in I missed a lets/let's mistake in a comment Automattic/harper#492
docs: rewrote instructions on how to author a rule by @elijah-potter in docs: rewrote instructions on how to author a rule Automattic/harper#482
missing indefinite article in comments by @hippietrail in missing indefinite article in comments Automattic/harper#488
Apply rule from issue #465 to core document.rs by @hippietrail in Apply rule from issue #465 to core document.rs Automattic/harper#510
feat(core): allow trailing commas in the lint_group macro by @elijah-potter in feat(core): allow trailing commas in the lint_group macro Automattic/harper#483
fix agreement error in docs by @hippietrail in fix agreement error in docs Automattic/harper#417

Full Changelog: Automattic/harper@v0.17.0...v0.18.0

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