v1.9.1

This is a small bugfix release. If you use push notifications, you may find that you need to reset your push notifications after this.

Note that Pinafore can only have push notifications for one instance at a time. This is a limitation in how the browser's Service Worker push notification API works.

• chore: update webpack to 4.34.0 #1286
• chore: update rollup to 1.15.6 #1285
• fix report dialog not taking comments #1282 #1283
• fix: push subscriptions per instance #1277
• chore: Update css-loader to the latest version 🚀 #1280
• fix: Esc key dismisses tooltip #1268