Changes

# [[An Introduction to Kotlin Inheritance and Subclassing]]<br><br>

# [https://www.answertopia.com/android-studio/android-app-and-activity-lifecycles/ Understanding Android Application and Activity Lifecycles]<br><br>

# [[Kotlin - Android Activity State Changes by Example|Android Activity State Changes by Example]]<br><br>

# [[Kotlin - Saving and Restoring the State of an Android Activity|Saving and Restoring the State of an Android Activity]]<br><br>