Update rollup to version 0.31.1 🚀

[greenkeeperio-bot]

Hello lovely humans,

rollup just published its new version 0.31.1.

State	Update 🚀
Dependency	rollup
New version	0.31.1
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 6 commits .

• c93debc -> v0.31.1
• 8f9d813 Merge pull request #714 from rollup/gh-712
• a085bdc handle errors emitted by rollup-watch (#712)
• 31528a5 Merge pull request #713 from rollup/upgrade-string
• 958ff75 Upgrade rollup-plugin-string
• 89327d5 oops

See the full diff.

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This pull request was created by greenkeeper.io.

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[coveralls]

Coverage remained the same at 100.0% when pulling 1b31e7b on greenkeeper-rollup-0.31.1 into 4f849b3 on master.