build(devDeps): bump rollup from 0.60.1 to 0.61.2

[dependabot-preview]

Bumps rollup from 0.60.1 to 0.61.2.

Changelog

Sourced from rollup's changelog.

0.61.2

2018-06-23

• Improve watcher error handling, only rebuild invalidated outputs (#2296)
• Update dependencies, make watcher more stable (#2297)

0.61.1

2018-06-21

• Do not try to deconflict "undefined" (#2291)
• Properly track values for loop interator declarations and reassigned namespaces, add smoke test (#2292)

0.61.0

2018-06-20

• Declare file dependencies via transform plugin hooks (#2259)
• Handle undefined values when evaluating conditionals (#2264)
• Handle known undefined properties when evaluating conditionals (#2265)
• Access watch events via the plugin context (#2261)
• Add option to suppress __esModule flag in output (#2287)
• Fix issue when re-declaring variables, track reassignments in more cases (#2279)
• Add VSCode debug settings (#2276)

0.60.7

2018-06-14

• Fix typing issue (#2269)

0.60.6

2018-06-14

• Track mutations of included virtual arrays (#2263)
• Update readme (#2266)

0.60.5

2018-06-14

• Track deep reassignments of global and exported variables and improve performance (#2254)

0.60.4

2018-06-13

• Properly handle initially uninitialized exports and exports of globals in SystemJS output (#2258)

0.60.3

2018-06-13

• Fix types to allow watching an array of outputs (#2262)

0.60.2

2018-06-11

• Permit setting an asset's source in generateBundle (#2256)
• Add automatic linting (#2242)

Commits

• 8b582b5 0.61.2
• ee76fd5 Install chokidar, do not use "latest" in package.json
• 48201b4 Update changelog
• 095b291 Update rollup dependencies and make watcher more stable (#2297)
• a9d8827 Watcher fixes (#2296)
• 3b5fe13 Fix test name
• 697f36d 0.61.1
• 2af076c Merge branch 'better-tests'
• 8e7cf6b Treat for-in and for-of iterator variables as unknown
• ad539b7 Track reassignments of namespace objects
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #203.