Update ws to version 2.3.1 🚀

[greenkeeperio-bot]

Hello lovely humans,

ws just published its new version 2.3.1.

State	Update 🚀
Dependency	ws
New version	2.3.1
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 ws.
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 343 commits .

• 732aaf0 [dist] 2.3.1
• 3633d6c [fix] Make WebSocket#close() work when called from a headers listener
• 309d77f [dist] 2.3.0
• 2d66ec9 [pkg] Remove .npmignore in favor of files package.json field
• b5b0954 [feature] Add headers event to WebSocket (#1082)
• 860cc23 Merge pull request #1080 from websockets/fix/deopt
• 3dbb58a [perf] Prevent Sender.frame() from being deoptimized
• e182e96 [doc] Fix typo in README.md
• 2bacadc [doc] Update optional modules section
• 94c3c8b Merge pull request #1078 from dgrcode/enhance/add-browser-readme
• 2efbdbc Added a note to tell possible confused users that they should be using the native WebSocket in the browser
• c4202c6 chore(package): update eslint-config-standard to version 10.2.0 (#1075)
• 26bf775 chore(package): update eslint-plugin-standard to version 3.0.0 (#1074)
• 13cff40 chore(package): update eslint-config-standard to version 10.1.0 (#1072)
• eb89db6 Merge pull request #1070 from websockets/add/request-argument

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

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[coveralls]

Coverage remained the same at 83.957% when pulling 750d695 on greenkeeper-ws-2.3.1 into 18d9c5b on master.