added updateBBox and associated tests
Route complete, RouteForecast stub in place; added test files
small fixes to to rtefcst and test
basic forecast iteration along route in place
genRteFcst complete
appWind in place, plus stub for gpx export
rtefcst complete - for now...
added gpx export tests
small updates, some doc
Added method nautLatLon() to objects.LatLon
changed Wind cardinal directions logic
added nautDir() method to Wind
added some "Notes to Alex"
added handle_rtefcst and re-shuffled argparse subparser setup
added files directory with windarrow waypoint icons for OpenCPN
updating .gitignore