Update testdouble to the latest version 🚀

[greenkeeper]

Version 3.1.0 of testdouble just got published.

Dependency	testdouble
Current Version	3.0.0
Type	devDependency

The version 3.1.0 is not covered by your current version range.

Without accepting this pull request your project will work just like it did before. There might be a bunch of new features, fixes and perf improvements that the maintainers worked on for you though.

I recommend you look into these changes and try to get onto the latest version of testdouble.
Given that you have a decent test suite, a passing build is a strong indicator that you can take advantage of these changes by merging the proposed change into your project. Otherwise this branch is a great starting point for you to work on the update.

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Commits

The new version differs by 50 commits.

• 790ea87 Changelog for 3.1.0
• 6dacfb0 3.1.0
• e7cf045 Merge pull request #258 from miyu/master
• 7a29c51 Merge pull request #264 from testdouble/257-object-detection
• 9608449 Guard aginst dumb Travis timeout in Node 6.
• ce3149b Tests for multi-resolve/reject stubbings
• 5fbce3f This failed on a slow travis worker, bumping times
• b86de94 Revert "This keeps timing out on travis for some reason"
• e081eac This keeps timing out on travis for some reason
• ead7583 Make td.constructor consistent with object/func
• f21ffbc Replace all isPlainObjecft with isObjectLike
• 54afda0 Make replace work with Object.create/instances
• 1639333 Get all func|object|constructor on same prop+copy
• d6ea18d Bring function to parity with object now
• 4b8df37 standard fixes

There are 50 commits in total.

See the full diff

Not sure how things should work exactly?

There is a collection of frequently asked questions and of course you may always ask my humans.

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Your Greenkeeper Bot 🌴

[coveralls]

Coverage remained the same at 17.811% when pulling 74ea731 on greenkeeper/testdouble-3.1.0 into 7951c63 on master.