Upgrade unexpected-stream to version 4.0.0

[depfu]

Here is everything you need to know about this upgrade. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ unexpected-stream (^3.0.0 → ^4.0.0) · Repo

Commits

See the full diff on Github. The new version differs by 18 commits:

• 4.0.0
• Drop node.js 9, add 10 and 12
• Drop node.js 6 support so we can use the new eslint-plugin-node (semver-major)
• Merge remote-tracking branch 'origin/depfu/update/npm/eslint-plugin-node-9.0.1'
• Tests & docs: Stop relying on the exact output of a gzip stream
• Update unexpected to ^11.5.0, adjust expected error messages involving Buffers
• Update eslint-plugin-node to version 9.0.1
• Disable node/no-deprecated-api rule in a construct that uses the new API if available
• Run prettier on ci
• prettier --write '**/*.js'
• eslint --fix .
• Update linting setup
• Add site-build and coverage to .prettierignore
• prettier --write '**/*.js'
• for transform in arrow arrow-return let obj-shorthand obj-method ; do for dir in lib test; do lebab --transform $transform --replace $dir; done ; done
• Use a WeakMap for storing the chunks from already consumed streams
• Merge pull request #17 from unexpectedjs/depfu/update/npm/nyc-14.0.0
• Update nyc to version 14.0.0

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