Update marcosc-async to version 2.0.0 🚀

[greenkeeperio-bot]

Hello 👋

🚀🚀🚀

marcosc-async just published its new version 2.0.0, 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 marcosc-async – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging 🌴

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The new version differs by 4 commits .

• 3a8b847 Chore(package): bumped to v2
• 0b56507 Feat(tests): Rewrote tests
• 972a046 Feat(async): simplified implementation
• bb306e5 Fix(async): don't warn anymore about unhandled errors

See the full diff.

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This change is