0.12.0-next.9

• Fix accidental bundle size increase due to core-js version (#550)
• Use preset-modules for modern output (#557, thanks @JoviDeCroock)
• Add --css-modules option for *.css files in addition to *.module.css (#370, thanks @maraisr)
• Fix a bug that caused modern output to be not modern (#570)
• Add support for --define @expression=replacement (#588)
• Silence a bunch of unnecessary warnings
• Reduce bundle size when using async/await, in particular for await () (#596)
• Fix output filename generation when using .ts entry modules (#587)