Update fbjs to version 0.8.1 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

fbjs just published its new version 0.8.1, 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 fbjs – 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 103 commits (ahead by 103, behind by 3).

• d54d3e0 0.8.1
• 4bf1b7e Changelog for v0.8.1
• 47d4e33 Update flow to 0.23
• e438355 Merge pull request #137 from zpao/flow-promise-def
• 9602466 Add old Promise Flow definition
• 8f48736 Update changelogs with release
• 777c901 fbjs-scripts 0.6.0
• 500cb40 0.8.0
• 2e58591 Update changelogs for master
• eb0baa2 Use latest jest in tests
• 1f0e26c Update babel 6 dev expression test
• c60b7dd Drop babel-types dependency
• bb9ca45 Update del to latest
• 6e12b79 Sync from internal
• 89ffda5 Merge pull request #129 from yungsters/node

There are 103 commits in total. See the full diff.

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