v0.27.0

Breaking

• Require function declaration for named components (#33) 62e64fd
  Why?

New rules

• react/iframe-missing-sandbox 5a665cf
• react/hook-use-state 9d77b06

Improvements

• Add option for react/jsx-curly-brace-presence rule 9b5e73b
• Add option to react/jsx-key rule b5091ab

v0.26.0...v0.27.0