Meta: Babel

[lixiaoyan]

• Use babel-preset-env targets
  • Different targets for client / server side
• Upgrade babel-minify (for babel 7.0)
• Upgrade broken babel-plugin-styled-components (Use file.opts.filename instead of file.opts.basename for babel 7 compatibility styled-components/babel-plugin-styled-components#84)
• Remove spec: true after [7.0] Wrong this with class properties and arrow function babel/babel#6153 fixed
• Decorator stage-2
  • Remove decorator
    • Use hoist-non-react-statics