Update webpack to version 2.3.1 🚀

[greenkeeperio-bot]

Hello lovely humans,

webpack just published its new version 2.3.1.

State	Update :rocket:
Dependency	webpack
New version	2.3.1
Type	devDependency

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 webpack. 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 :sparkles:

You rock!

:palm_tree:

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The new version differs by 2055 commits (ahead by 2055, behind by 66).

• 4b9b660 2.3.1
• d1cf8b4 Merge pull request #4538 from webpack/feature/error-emit-warning
• ec46a0d Merge pull request #4539 from mp4096/master
• 18566a1 Fixed link to the Traceur repo in README
• 751fd9b add stack to non-Error error emitted
• b1acb2e Merge pull request #4537 from webpack/bugfix/newline-validation
• 49ccf44 Merge pull request #4536 from webpack/bugfix/issue-4532
• 10c44e5 fix extra newline in validation
• 915c150 fix bug in MinChunkSizePlugin
• 46dc08e 2.3.0
• 01c06de Merge pull request #4527 from webpack/bugfix/issue-4472
• 23e1f7c install Promise early in chunk cache
• 0c137cb Merge pull request #4521 from chicoxyzzy/patch-1
• 98ea823 Merge pull request #4503 from eirikurn/empty-env-variables
• 0058a2e Use ts-loader instead of deprecated typescript-loader

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

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