Valid flow strict annotation

[xunuoi]

Support flow strict annotation

• Added eslint rule for @flow strict and its fixer
• Ref, Support for "@flow strict"? #364

Examples

// Options: ["always",{"annotationStyle":"line","strict":true}]
// @flow
// Message: Strict Flow file annotation is required, should be `// @flow strict`

[gajus]

🎉 This PR is included in version 3.11.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[xunuoi]

@gajus Nice! Thank you very much! I'll delete this branch

[xunuoi]

@gajus

Hey, sorry, there is a bug for @noflow in this PR, I created a fixing path here, #415

Please help check and review again, sorry about that