Update rollup to version 0.27.0 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

rollup just published its new version 0.27.0, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of rollup – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging :palm_tree:

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The new version differs by 114 commits .

• b12db91 -> v0.27.0
• 0b27f06 Merge branch 'master' of https://github.com/rollup/rollup
• 74ea693 Merge pull request #693 from rollup/gh-689
• e21d8a3 oops
• 3264378 tidy up tests, squelch nuisance warnings
• fc648ea remove es6-promise. closes #689
• 977f409 Merge pull request #688 from rollup/gh-655
• 7a03bf0 Merge pull request #692 from rollup/non-string-ids
• 169ae35 allow resolved module IDs to be non-strings
• a3f2d17 Allow specifying multiple output targets.
• 7f1d9f2 -> v0.26.7
• 7d153d3 Merge pull request #685 from rollup/esmodule
• 5266ace Merge pull request #686 from rollup/gh-637
• f007285 remove commented out code
• 558b4cf distinguish between default and namespace imports from external module (#637)

There are 114 commits in total. See the full diff.

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