chore(release): 10.4.0 [skip ci]

# [10.4.0](https://github.com/react-native-community/react-native-webview/compare/v10.3.3...v10.4.0) (2020-08-06)

### Features

* **android:** WebView crash handling ([#1480](https://github.com/react-native-community/react-native-webview/issues/1480)) ([8a8b7ce](8a8b7ceb98/))

package.json

     "Thibault Malbranche <malbranche.thibault@gmail.com>"
   ],
   "license": "MIT",
-  "version": "10.3.3",
+  "version": "10.4.0",
   "homepage": "https://github.com/react-native-community/react-native-webview#readme",
   "scripts": {
     "start": "node node_modules/react-native/local-cli/cli.js start",