Update rollup-plugin-buble to the latest version 🚀

[greenkeeper[bot]]

Version 0.18.0 of rollup-plugin-buble was just published.

Dependency	rollup-plugin-buble
Current Version	0.17.0
Type	devDependency

The version 0.18.0 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.

It might be worth looking into these changes and trying to get this project onto the latest version of rollup-plugin-buble.

If you have a solid test suite and good coverage, a passing build is a strong indicator that you can take advantage of these changes directly by merging the proposed change into your project. If the build fails or you don’t have such unconditional trust in your tests, this branch is a great starting point for you to work on the update.

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Your Greenkeeper bot :palm_tree:

[coveralls]

Coverage remained the same at 100.0% when pulling c10b0e0fc214a35aa373a390a31cc0052a7bdc82 on greenkeeper/rollup-plugin-buble-0.18.0 into 59e7dc4839e6cdfd47f4656c23b06fcd62888471 on master.

[coveralls]

Coverage remained the same at 100.0% when pulling 91e7ece6017246d44cc8a6057333548fab552ff7 on greenkeeper/rollup-plugin-buble-0.18.0 into b27072df89fc9e27611eea4acb00dc224d8565fd on master.