Using Facial Features Detection in Photos to "emojify" a picture based on the facial expression of the captured face. https://developers.google.com/vision/android/detect-faces-tutorial
Using Timber library for advanced loging and error reporting. Disables log on release builds. https://github.com/JakeWharton/timber
https://medium.com/@caueferreira/timber-enhancing-your-logging-experience-330e8af97341