Update to Qt 5.12
Where possible, we should upgrade the build to Qt 5.12. This will require special attention for Android, as Qt is built using LLVM starting with this version, hence, the APK build will need to be adapted.
Where possible, we should upgrade the build to Qt 5.12. This will require special attention for Android, as Qt is built using LLVM starting with this version, hence, the APK build will need to be adapted.