Update css-loader to version 0.20.2 🚀

[greenkeeperio-bot]

Hello 👋

🚀🚀🚀

css-loader just published its new version 0.20.2, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of css-loader – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging 🌴

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The new version differs by 33 commits .

• e5b308d 0.20.2
• 46129ba updated dep
• baab9ef Merge pull request #146 from webpack/values
• 6f9de76 added CSS Modules values support
• d1aa291 Merge pull request #149 from nkt/camelcased-keys
• 4e6bd42 Keep both key types in camelCase mode
• 5126cff Added camelCase option
• 909f8e6 0.20.1
• b8426f9 fixes #150
• e93914c 0.20.0
• 09bd206 don't use loaders in SourceMaps, just the resource
• f34cfc3 fixed travis build
• 54cb5ec 0.19.0
• 16528d5 PostCSS 5 and CSS Modules updates
• b6d12a4 0.18.0

There are 33 commits in total. See the full diff.

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