Update tap to version 5.7.1 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

tap just published its new version 5.7.1, 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 tap – 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 7 commits .

• d5e11d0 v5.7.1
• 0ca1678 Fail properly for synchronous timeouts
• fc8c709 test fixup: unnamed tests are now consistently named
• 41efd22 Unit test for t.test() arg parsing
• 2217f89 throw TypeError for non-numeric plan
• aa84bff Handle t.test(obj,fn) properly
• b2d2b94 Make output tests pass on node 5

See the full diff.

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