Update jscs to version 3.0.4 🚀

[greenkeeperio-bot]

Hello 👋

🚀🚀🚀

jscs just published its new version 3.0.4, 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 jscs – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging 🌴

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The new version differs by 26 commits .

• f867612 3.0.4
• 3c64a00 Misc: add 3.0.4 changelog
• 584c556 Tests: do not run integration tests
• 56ca72b maximumLineLength: correctly position error for comment nodes
• ea1ebb9 disallowUnusedParams: notice AssignmentPattern nodes
• e948d70 Docs: Fix small typo in require-early-return (#2259)
• a215e67 Build: update cst to 0.3.0
• f3be3d6 disallowPaddingNewlinesBeforeKeywords: should not ignore comments
• 29d1b00 requireCurlyBraces: small docs corrections
• 7b8d6b0 Misc: make linters happy
• 3b2f6de Misc: add node 6 to travis
• 724b2df Misc: do not modify CST in check mode (#2252)
• 9ea70d2 Misc: remove rules "grouping"
• fa4ee36 Misc: bump cst version
• 9eaa1f7 Tests: remove mocha.onlycall

There are 26 commits in total. See the full diff.

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[coveralls]

Coverage remained the same at 100.0% when pulling ec331b3 on greenkeeper-jscs-3.0.4 into a16a3f3 on master.