chore(release): 4.0.0 [skip ci]

# [4.0.0](v3.0.3...v4.0.0) (2020-07-24)

### Features

* **Android:** Add flush method on Android ([#64](#64)) ([74cd6a1](74cd6a1))

### BREAKING CHANGES

* **Android:** Android Minmum SDK bumped to API 21

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native-community/cookies",
-  "version": "3.0.3",
+  "version": "4.0.0",
   "description": "Cookie Manager for React Native",
   "repository": {
     "type": "git",