v3.3.0 added random per-build revision to `sw.js` with invalid URL. Actual start URL: `/start_url&revision=xxxxxxxx` Expected start URL: `/start_url?revision=xxxxxxxx` Error in chrome as follow: ```text workbox-precaching.prod.js:1 Uncaught (in promise) bad-precaching-response: bad-precaching-response :: [{"url":"http://localhost:3000/start_url&revision=xxxxxxxx","status":404}] ```