Update nock to version 2.16.0 🚀

[greenkeeperio-bot]

Hello 👋

🚀🚀🚀

nock just published its new version 2.16.0, 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 nock – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging 🌴

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The new version differs by 148 commits .

• 9d9ac75 v2.16.0
• e122564 Merge branch 'seegno-forks-enhancement/add-global-is-done'
• d530377 AddisDone()to global scope
• f480a84 ipv6 url in test
• 5da238f clarified allowUnmocked option
• 7cca716 Merge pull request #383 from izaakrogan/master
• 6a491ce addition to allow-unmocked section of readme
• 3ae57b7 v2.15.0
• f60662c added Matt Oakes as contributor
• 47b7902 Merge branch 'matto1990-feature_after_record'
• 3cdfafe Allow filtering nock back recording before saving
• c805410 removed change log
• 832a586 v2.14.0
• 039649e Merge branch 'DavidTPate-reqheader-regex-function'
• 35e4259 Add the ability (and positive + negative tests around the functionality) to specify a regular expression or function to check incoming request headers. Also add documentation around it and add myself to the contributors list.

There are 148 commits in total. See the full diff.

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