Finalize federated architecture (#40)

* Update PULL_REQUEST_TEMPLATE.md * Remove android folder * Switch on PlatformInterface * Update example * Update CHANGELOG.md * Updates tests * Update CHANGELOG.md * Update google_api_availability.dart * Add missing import * Update pubspec and changelog

Author: JeroenWeener

.github/PULL_REQUEST_TEMPLATE.md

@@ -19,6 +19,6 @@
 ### :thinking: Checklist before submitting
 
 - [ ] All projects build
-- [ ] Follows style guide lines ([code style guide](https://github.com/BaseflowIT/flutter-geolocator/blob/develop/CONTRIBUTING.md))
+- [ ] Follows style guide lines ([code style guide](https://github.com/BaseflowIT/flutter-google-api-availability/blob/main/CONTRIBUTING.md))
 - [ ] Relevant documentation was updated
-- [ ] Rebased onto current develop
+- [ ] Rebased onto current develop

google_api_availability/CHANGELOG.md

@@ -1,11 +1,16 @@
+## 5.0.0
+
+* **BREAKING CHANGE**: Removes support for iOS, as it was never truly supported.
+* Uses the federated architecture.
+
 ## 4.0.0
 
-* Changed the structure of the native code;
-* Updated the example app;
-* Added `makeGooglePlayServicesAvailable` ;
-* Added `getErrorString`;
-* Added `isUserResolvable`;
-* Added `showErrorNotification`;
+* Changed the structure of the native code.
+* Updated the example app.
+* Added `makeGooglePlayServicesAvailable`.
+* Added `getErrorString`.
+* Added `isUserResolvable`.
+* Added `showErrorNotification`.
 * Added extra tests for the newly added methods.
 
 ## 3.0.2