Update babel-plugin-istanbul to version 4.0.0 🚀

[greenkeeperio-bot]

Hello lovely humans,

babel-plugin-istanbul just published its new version 4.0.0.

State	Update :rocket:
Dependency	babel-plugin-istanbul
New version	4.0.0
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 babel-plugin-istanbul. 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 :sparkles:

You rock!

:palm_tree:

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The new version differs by 27 commits .

• ac8abab chore(release): 4.0.0
• e902924 fix: load configuration from process.env.NYC_CONFIG if present (#93)
• f77db2a feat: we can now use the language feature Object.assign (#92)
• 80afed9 docs(readme): add Greenkeeper badge 🌴 (#89)
• 594c03a feat: drop Node 0.10 and 0.12 support, upgrade dependencies to reflect this (#88)
• f0b8d7e chore(package): update test-exclude to version 4.0.0 (#86)
• 86c1c09 chore(release): 3.1.2
• f870a8f fix: address regression related to export const foo = () => {} (#79)
• 73a4247 chore: explicitly upgrade istanbul-lib-instrument
• 9818c25 chore(release): 3.1.1
• 18bbcdc chore: upgrade to version of istanbul-lib-instrument that addresses inferred function name issues
• 2e0af61 chore(release): 3.1.0
• e764330 fix: upgrade a bunch of core dependencies (#77)
• 437e90b feat: accept source map input for the visitor (#75)
• 7bd4eb8 chore(package): update standard-version to version 4.0.0 (#73)

There are 27 commits in total. See the full diff.

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[coveralls]

Coverage remained the same at 100.0% when pulling f9a99b1a3a1b593df18a7c069a936950098291e7 on greenkeeper-babel-plugin-istanbul-4.0.0 into cc0892efd71bdeed443509b08423d7ff493d9c43 on master.