Update bluebird to the latest version 🚀

[greenkeeper]

Version 3.5.1 of bluebird just got published.

Dependency	bluebird
Current Version	3.5.0
Type	dependency

The version 3.5.1 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 bluebird.
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.

---

Release Notes

v3.5.1

Bugfixes:

• Fix false positive unhandled rejection when using async await (#1404)
• Fix false positive when reporting error as non-error (#990)

Commits

The new version differs by 26 commits.

• dcfa52b Release v3.5.1
• 48c8591 Fixes #1404
• 3c93a91 Revert "Update default.html"
• 5155a7b Merge pull request #1463 from gabegorelick/isError
• 3f7ccf4 Better error check
• f8f4a01 Merge pull request #1462 from themez/patch-1
• 18891c9 Fix title style
• b2b14c2 Update default.html
• a61aa1c tiny grammar change (#1457)
• 2c9f7a4 Update tap.md (#1438)
• 3a7fcbb fixes markdow headers (#1437)
• e889c0d Correct a tiny tiny typo (#1431)
• e03f12c improve .all() docs (#1436)
• 4f90934 Updated links (#1420)
• 3d2e57f Add Node.js 7+8 to Travis build matrix (#1412)

There are 26 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.

---

Your Greenkeeper Bot 🌴

[coveralls]

Coverage remained the same at 96.0% when pulling 1b6aa41 on greenkeeper/bluebird-3.5.1 into f9b6cb1 on master.