Update mongoose to version 4.6.4 🚀

[greenkeeperio-bot]

Hello lovely humans,

mongoose just published its new version 4.6.4.

State	Update 🚀
Dependency	mongoose
New version	4.6.4
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!

🌴

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The new version differs by 972 commits .

• ba876be chore: release 4.6.4
• 1750197 docs: add retainKeyOrder option re: #4542
• 9b0e5e2 refactor: remove hacky fix for #4592 in favor of #4616
• 8ac779a Merge pull request #4630 from Automattic/gh-4542
• b4f1701 fix: add ability to set promise implementation in browser
• 72c8a5a feat(schema): add retainKeyOrder prop
• 908ed3c test(document): add repro for #4542
• 3293a7b Merge branch 'master' into gh-4542
• 84d5801 docs(connections): add some warnings about buffering
• 381ee63 fix(connection): add dropDatabase() helper
• 687eecd fix(populate): copy ids array before modifying
• a2f90d8 test(populate): repro #4585
• 564f461 Merge pull request #4616 from prssn/master
• 6eefbc7 fix(query): cast $not correctly
• 93ee959 test(query): repro #4592

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