Update lab to version 9.0.0 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

lab just published its new version 9.0.0, 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 lab – 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 22 commits .

• 0d90b99 version 9.0.0
• b640d76 Merge pull request #522 from geek/nohint
• 941ebd7 Remove jslint and support custom linters
• 60a6340 version 8.4.0
• 663db6e Merge pull request #521 from rluba/fix/coverage_trailing-function-declaration
• 7505687 Merge master into fix/coverage_trailing-function-declaration
• 7a316ef Merge pull request #520 from rluba/fix/single-line_functions
• 2413763 Update test name to be consistent with the others
• 2ba2d72 Fix: Function declarations itself should not be tracked
• 82268ad Add failing test for reporting coverage on trailing function declarations
• c2c3595 Add test for detecting partially covered arrow expressions
• 0bf75e8 Fix #274: lab coverage report for single-line function expressions
• dba4897 Fix coverage reporting for single-expression arrow functions
• 742a749 Add coverage test for another kind of single-expression arrow function
• 31afe72 Add a multi-statement function that’s also not recognized as being uncovered

There are 22 commits in total. See the full diff.

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