0.0.2

Bump version to 0.0.2 and add check for updateManager initialization

-   Incremented the library version to 0.0.2.
-   Added a check to ensure `updateManager` is initialized before calling `completeUpdate()` in the `onStateUpdate` callback.
-   Added a check to ensure `updateManager` is initialized before calling `appUpdateInfo` and `startUpdateFlowForResult` in the `resumeUpdate()` method.