Update inert to version 4.0.0 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

inert just published its new version 4.0.0, 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 inert – 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 24 commits .

• c4f6b07 4.0.0
• d53a0ec Merge pull request #47 from kanongil/confine-file-path
• 7251728 Remove '..' param check which is no longer required. Closes #5
• 0a6b551 Add confine option that confines file responses
• fef2232 Update license date
• ac741b5 Update hoek to 4.x.x
• d751e8d Update travis config to match hapi
• c439c5b Update joi to 8.x.x
• d2998d8 Update devDependencies
• 11ce9bf Merge pull request #56 from prashaantt/clarify
• 9607ea4 Merge pull request #59 from simon-p-r/absolutePath
• 4e3ec4d Merge pull request #61 from kanongil/gzip-range-fix
• bd6a007 Restrict when range request logic is applied. Closes #60
• 3c4cd57 remove hoek.isAbsolutePath for path.isAbsolute
• 5540383 Clarify bad path for directory handler message

There are 24 commits in total. See the full diff.

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