* Enhance Performance *
* Refactoring Code *
* Remove unused code *
* Update documentation *
* Update build.gradle *
* Update sample code *
* Update Android Gradle Plugin 7.0.1 *
* Update Admob Library Version 20.3.0 *
* Enhance Performance *
* Refactoring Code *
* Remove unused code *
* Update documentation *
* Update build.gradle *
* Update sample code *
* Update Android Gradle Plugin 7.0.1 *
* Update Admob Library Version 20.3.0 *