Update webpack to the latest version 🚀

[greenkeeper]

Version 4.12.1 of webpack was just published.

Dependency	[webpack](https://github.com/webpack/webpack)
Current Version	4.12.0
Type	devDependency

The version 4.12.1 is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

It might be worth looking into these changes and trying to get this project onto the latest version of webpack.

If you have a solid test suite and good coverage, a passing build is a strong indicator that you can take advantage of these changes directly by merging the proposed change into your project. If the build fails or you don’t have such unconditional trust in your tests, this branch is a great starting point for you to work on the update.

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Release Notes

v4.12.1

Bugfixes

• fix problem causing a stack overflow when reexporting circular
• fix a bug causing missing modules in bundles when using splitChunks
• run modules in correct order when using import with sideEffects: false
  • added order to DependencyReference
• add missing support for [chunkhash] in target: "webworker"
• fix bug causing incomplete profile (race condition) with the ProfilingPlugin

Internal changes

• Added more types
• lint files on commit with lint-staged

Commits

The new version differs by 55 commits.

• 8a7597a 4.12.1
• bb38c5d Merge pull request #7586 from samccone/sjs/fix_webpack_profiling_race
• 735f99c Fix race condition in profiling plugin.
• 3fb49de Merge pull request #7581 from TimHambourger/master
• 6dd4d76 Merge pull request #7582 from arkadyt/bugfix/remove-dead-links-from-examples-doc
• 2bc5437 Merge pull request #7532 from Legends/CommentCompilationWarning
• 1e7b4e9 Remove dead links from /examples README.md.
• 2fb9a6c remove typedef Position import
• 4fc03e1 Merge pull request #7531 from Legends/APP
• 1ef1241 Implement all path variables for webworker dynamic imports
• afdbf71 removing typedef exports
• 7969a5a Importing typedef from Dependency.js ??? Please review.
• b03804e added Compiler, @returns void
• 4de3ce0 Merge pull request #7554 from greysteil/add-semver-badge
• 5aafb83 update to lastest version badge

There are 55 commits in total.

See the full diff

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