v6.0.0

Breaking

• Move ThemeProvider and withTheme to emotion/react/theming (#130 thanks @mitchellhamilton!)

Features

• Prefix objects in css and styled calls (#101 thanks @nishp1!)
• Expose emotion named exports on emotion/react, emotion/vue and emotion/server (#153 thanks @mattfysh!)
• Use emotion with babel-macros (#142 thanks @mitchellhamilton!)