Update mongoose to version 4.9.5 🚀

[greenkeeperio-bot]

Hello lovely humans,

mongoose just published its new version 4.9.5.

State	Update 🚀
Dependency	mongoose
New version	4.9.5
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 1336 commits .

• e5390b1 chore: release 4.9.5
• 3b07f29 chore: fix build on node 4+5
• fe428a9 docs: add advanced schemas docs
• 06099f8 docs(schema): add basic docs for loadClass()
• 1bdb17f chore: customize travis build
• c894753 chore: remove old ES6 integration tests
• 761ea35 test(update): repro #5164
• 835f3c8 Merge pull request #5164 from Sebmaster/fix/wrong-null-handling
• fce6716 Fix casting of null values
• 7d8254b fix(model): add resolveToObject option for mapReduce with ES6 promises
• 52bb50f test(model): repro #4945
• 0e5cbab fix(document): handle null/undefined gracefully in applyGetters()
• e05f597 test(document): repro #5143
• b66be34 chore: now working on 4.9.5
• d4d2d01 chore: release 4.9.4

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

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