Where-to-fly for Android version 1.6.0
Where-to-fly for Android, version 1.6.0, "Crossing the Alps 2019" edition, with the following changes:
- added new "layer" menu where CesiumJS .czml files can be loaded as layers displayed on the map
- added specifying "track point interval" when imported track has no time data (e.g. for KML LineStrings); useful for .kml files from XC Tracer II GPS
- flying range cones can now be hidden using an icon in the description
- supported opening .igc files downloaded from xcontest
- updated waypoints for Crossing the Alps 2019