Update rollup to version 0.38.0 🚀

[greenkeeperio-bot]

Hello lovely humans,

rollup just published its new version 0.38.0.

State	Update 🚀
Dependency	rollup
New version	0.38.0
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!

🌴

---

The new version differs by 309 commits .

• 79c4007 -> v0.38.0
• 8819519 add test to guard against #984 regression
• 0409388 Merge pull request #1168 from rollup/gh-1083
• 553abd9 bind function expression ids to the child scope (#1083)
• e550b3f Merge pull request #1167 from rollup/gh-1078
• 21a5d0d alright i give up. bye node 0.12
• 5430096 downgrade eslint to a version that supports node 0.12
• fe16d37 update some deps to get tests to pass
• 1c354ba deshadow destructured parameters with assignments (#1078)
• e1c49cf Merge pull request #1166 from rollup/gh-1078
• e05bf77 fix behaviour of export { foo as default } (#1078)
• f2742e4 Merge pull request #1165 from rollup/gh-988
• 1ca90bd prevent false positives for sourcemapping url comments with newlines (#988)
• 37a6869 -> v0.37.2
• 94f2ac4 Merge pull request #1017 from Pauan/tree-shake-pure-es5-classes

There are 250 commits in total. See the full diff.

---

This pull request was created by greenkeeper.io.

_{Tired of seeing this sponsor message? ⚡ greenkeeper upgrade}