1.39.0

• Use Prism instead of CodeMirror
  • Keep existing functionality (copy/paste)
• Make Babel configurable (see blog post) and #386 )
  • This config can also be used to change the theme, let's say you have a dark UI, you could load a dark theme with plugins.prismjs.theme.
• Add option to copy/paste as JSX
  • This is useful when you are doing a prototype that has to be translated to a React context.