- [ ] Add [serviceworker](https://developers.google.com/web/fundamentals/getting-started/primers/service-workers#cache_and_return_requests) - [ ] Add to homescreen prompt ([criteria](https://developers.google.com/web/fundamentals/engage-and-retain/app-install-banners/#what_are_the_criteria)) - [ ] Improve [Lighthouse](https://github.com/GoogleChrome/lighthouse) score
