Proximity Sensor Test

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Note : This is the latest version of this app which supports Android KitKat (Android 4.4). More details in the Additional Info Window of this app.
Settings window - section "User Interface" - new options "Hide Toolbars during scrolling" and "Custom System Bars".
Settings window - new section "Main Window".
Support for the native "Google Material Design 3" color theming system.
Bug fixes and minor improvements.