Update rollup to version 0.40.2 🚀

[greenkeeperio-bot]

Hello lovely humans,

rollup just published its new version 0.40.2.

State	Update 🚀
Dependency	rollup
New version	0.40.2
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 rollup.
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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The new version differs by 150 commits .

• be76a1f -> v0.40.2
• cebc300 Merge pull request #1224 from rollup/gh-1217
• 46f5dbf Merge pull request #1223 from rollup/gh-986
• 502e58d omit globals for empty imports (#1217)
• e4f995e remove unused files
• 1032e75 add file property to sourcemaps with plugins
• 7e71777 put test where it belongs
• a9bcf45 Merge branch 'master' into gh-986
• 6cf998a -> v0.40.1
• 7af9387 Merge pull request #1218 from rollup/export-default-no-space
• e7fa75c handle export default{}
• 5dfae02 -> v0.40.0
• 219f1f1 Merge pull request #1212 from rollup/gh-545
• 35785ff more consistent error logging in CLI
• dd9a93f more error stuff

There are 150 commits in total. See the full diff.

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This pull request was created by greenkeeper.io.

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