message: test: use headless chrome for dev
diff: @@ -2,7 +2,7 @@ var base = require('./karma.base.config.js')
  module.exports = function (config) {
  config.set(Object.assign(base, {
  - browsers: ['Chrome'],
  + browsers: ['ChromeHeadless'],
  reporters: ['progress'],
  plugins: base.plugins.concat([
  'karma-chrome-launcher'
  