Merge branch '52-fix-app-icon' into 'master'

android/app/src/main/res/mipmap-hdpi/ic_launcher.png

android/app/src/main/res/mipmap-hdpi/launch_image.png

android/app/src/main/res/mipmap-mdpi/ic_launcher.png

android/app/src/main/res/mipmap-mdpi/launch_image.png

android/app/src/main/res/mipmap-xhdpi/ic_launcher.png

android/app/src/main/res/mipmap-xhdpi/launch_image.png

android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png

android/app/src/main/res/mipmap-xxhdpi/launch_image.png

android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png

android/app/src/main/res/mipmap-xxxhdpi/launch_image.png

android/gradle.properties

fastlane/metadata/android/en-US/images/icon.png

icons/icon.svg

pubspec.yaml