Update rollup to the latest version 🚀

[greenkeeper]

The devDependency rollup was updated from 0.66.0 to 0.66.1.

This version 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.

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[coveralls]

Pull Request Test Coverage Report for Build 187

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.015%

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Totals
Change from base Build 185:	0.0%
Covered Lines:	40
Relevant Lines:	40

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💛 - Coveralls

[greenkeeper]

• The devDependency rollup was updated from 0.66.0 to 0.66.2.

Update to this version instead 🚀

Commits

The new version differs by 3 commits.

• d8a4d7b 0.66.2
• b02da14 Update changelog
• bfb6b03 Throw better error messages for parse errors in non-JS files (#2466)

See the full diff