Update webpack to version 2.3.3 🚀

[greenkeeperio-bot]

Hello lovely humans,

webpack just published its new version 2.3.3.

State	Update 🚀
Dependency	webpack
New version	2.3.3
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 ✨

You rock!

🌴

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GitHub Release

Bugfixes:

• fix progress in multi compiler

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The new version differs by 2118 commits .

• ba24c1b 2.3.3
• 956f618 Fix ProgressPlugin for multi compiler caused by ES6 refactoring
• 6b209b1 2.3.2
• 88f2833 Merge pull request #4567 from webpack/bugfix/cheap-source-map
• 3fca75e Merge pull request #4565 from webpack/dx/error-description-output-path
• c226077 update webpack-sources dependency to fix a bug
• 2fe82af Suggest course of action
• 56d09ab Merge pull request #4533 from michael-ciniawsky/schema
• b5451ef Merge pull request #4564 from webpack/bugfix/cheap-source-map
• 22c771f update webpack-sources dependency to avoid performance issue
• 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

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

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