Update rollup to the latest version 🚀

[greenkeeper]

Version 0.61.0 of rollup was just published.

Dependency	[rollup](https://github.com/rollup/rollup)
Current Version	0.60.7
Type	devDependency

The version 0.61.0 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.

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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Commits

The new version differs by 24 commits.

• 8112edc 0.61.0
• 2361e3d Fix memory leak, remove solo from test and fix tests by adding proper default
• 9fc1294 Add release date
• 43d01fd Update changelog
• d4aed73 Allow to disable __esModule (#2287)
• 9de98ce Update changelog
• 605bdfc add vscode debugger settings (#2276)
• 2ce4a28 Merge branch 'double-declarations'
• 8cacd62 Separate collection and reassignment of initializers for double declarations
• 39cc149 Skip default property test on node 4
• dd35b6e Track reassignments of array elements
• 7911882 Track reassignments of pattern defaults
• 6bedd8c * No longer reassign variable initializers during initialization phase
• 41d6fe8 Merge branch 'transform-dependencies'
• 1b18909 feature: transform dependencies (#1203), watcher fixes #2280, #2281

There are 24 commits in total.

See the full diff

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