Update css-loader to version 0.28.4 🚀

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Hello lovely humans,

css-loader just published its new version 0.28.4.

State	Update 🚀
Dependency	css-loader
New version	0.28.4
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 css-loader.
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

0.28.4 (2017-05-30)

Bug Fixes

• preserve leading underscore in class names (#543) (f6673c8)

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The new version differs by 82 commits .

• ec4006c chore(release): 0.28.4
• f6673c8 fix: preserve leading underscore in class names (#543)
• 1a6b17d chore(release): 0.28.3
• b90f492 fix: correct plugin order for CSS Modules (#534)
• 72947b0 chore(release): 0.28.2
• c3d0d91 fix: source maps path on windows (#532)
• fe4cf7a docs(README): fix typo (#531)
• ae67b2a chore(release): 0.28.1
• 868fc94 fix: don't handle empty @import and url() (#513)
• 06d27a1 fix: allow to specify a full hostname as a root URL (#521)
• b8f5c8f perf: generate source maps only when explicitly set (#478)
• 760eefa docs(README): add extract-loader example (#518)
• b90d8dd docs(README): fix warning note about import (#519)
• c197343 docs(README): add note about compose when imports are disabled (#517)
• de4356b fix: case insensitivity of @import (#514)

There are 82 commits in total. See the full diff.