The biggest feature in this release is the addition of Prettier. You can read more about the plugin here. Basically, Prettier auto-formats your code. It should work against kyt's ESLint configuration.
To update your project, use the prettier-eslint cli.
node_modules/.bin/prettier-eslint src/**/*.js --writeThat should format all of the scripts in your src directory. To keep things formatted as you develop, install an editor package. See more here.
Most of the ESLint plugins were updated. You can find the details here. The upgrade should be seamless if you use Prettier.