Update mongoose to version 4.9.4 🚀

[greenkeeperio-bot]

Hello lovely humans,

mongoose just published its new version 4.9.4.

State	Update 🚀
Dependency	mongoose
New version	4.9.4
Type	dependency

This version 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 mongoose.
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.

Do you have any ideas how I could improve these pull requests? Did I report anything you think isn’t right?
Are you unsure about how things are supposed to work?

There is a collection of frequently asked questions and while I’m just a bot, there is a group of people who are happy to teach me new things. Let them know.

Good luck with your project ✨

You rock!

🌴

---

The new version differs by 1322 commits .

• d4d2d01 chore: release 4.9.4
• ed617b1 fix(schema): clone query middleware correctly
• b9f7d54 docs(aggregate): fix typo
• 364baa0 Merge pull request #5154 from Automattic/revert-5151-patch-1
• 3e66ded Revert "fix blue bird "a promise was created in a handler but was not returne…"
• dee0503 Merge pull request #5153 from clozanosanchez/patch-1
• 3d7cf68 Merge pull request #5151 from maa105/patch-1
• 75a325f fix(query): handle $setOnInsert consistent with $set
• eb3bb0a test(query): repro #5126
• 12c129b Solves issue #5141, regression caused by #5098
• bf6148d Update query.js
• 97be22f chore: add setOnInsert to castOps
• ed12a25 fix(populate): don't mutate populate result in place
• 9d940b7 test(populate): repro #5128
• 816c132 Update query.js

There are 250 commits in total. See the full diff.

---

✨ Try the all new Greenkeeper GitHub Integration ✨
With Integrations first-class bot support landed on GitHub and we’ve rewritten Greenkeeper to take full advantage of it. Simpler setup, fewer pull-requests, faster than ever. Screencast Try it today. Free for private repositories during beta.