message: Target electron 3 runtime in babel options
  This saves around 40KiB in generated/gui.js
  Changelog-entry: Target electron 3 runtime in babel options
  Change-type: patch
diff: @@ -36,7 +36,10 @@ const commonConfig = {
  use: {
  loader: 'babel-loader',
  options: {
  - presets: [ '@babel/preset-react', '@babel/preset-env' ],
  + presets: [
  + '@babel/preset-react',
  + [ '@babel/preset-env', { targets: { electron: '3' } } ]
  + ],
  plugins: [ '@babel/plugin-proposal-function-bind' ],
  cacheDirectory: true
  }
  