METAR and SIGMET overlays

To assist with situation awareness we have added two new map  overlays in the upcoming 1.5.2 release;

The METAR overlays the METAR information from the last downloaded forecast over the map. The METAR can be viewed by tapping on the blue icon. The wind arrows conform to the standard BOM notation. If a SPECI is applicable, an exclamation mark icon will appear adjacent to the METAR icon.

The SIGMET overlays any SIGMET’s in the last downloaded forecast when there is position information encoded in that SIGMET as a sequence of points.