v1.15

# Fixes
- Add android.permission.FOREGROUND_SERVICE needed by Android 9
- Allow non secure http on Android 9
- Fix IndexOutOfBoundsException when accessing download information from different threads
- Catch permission exceptions to prevent crash when using SAF
- Set tracker notifications to IMPORTANCE_LOW (disable annoying beep)


# Add / Change
- Allow configuration of status messages
- Add adaptive icon
- Use window flags in cockpit views to leave screen on (remove android.permission.WAKE_LOCK)
- Add option to disable screen lock while tracking (see issue #36)
- Speed improvements (formating strings and drawing map tiles)
- Draw shadow to make route overlays more visible
- Allow use of volume keys for map zoom (see issue #36)

