Update stylelint to version 6.1.0 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

stylelint just published its new version 6.1.0, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of stylelint – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging :palm_tree:

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The new version differs by 349 commits .

• 689ab97 Prepare 6.1.0
• 8248d31 Make order of changelog items consistent
• 924216f Merge pull request #1080 from evilebottnawi/comment-word-blacklist
• 303bebf change messages rejected
• 8325950 fixes and refactoring
• d98eecd `comment-word-blacklist rule`
• 6bd037a Merge pull request #1106 from stylelint/max-empty-lines-error-position
• b6b626f Change max-empty-lines error position; fixes #1100
• 6032ad5 Merge pull request #1105 from stylelint/triple-slashes
• 1b07a15 Merge pull request #1104 from stylelint/refine-matchesstringorregexp
• 87fa695 Fix #1097
• fefdb2a Output match data in matchesStringOrRegExp
• 9c4a030 Merge pull request #1102 from evilebottnawi/ignore-keywords-in-value-keyword-case
• dde4ff4 addignoreKeywordsoption forvalue-keyword-case.
• 24919a5 Merge pull request #1068 from evilebottnawi/value-no-longhand

There are 250 commits in total. See the full diff.

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