Correct whitespace in NasalPositioned.cxx; fix segfault in NasalPositioned by adding null check in the legGhostGetMember method; add test case for segfault
Modify the update rate of the closest airport with METAR to 10 seconds.
TCAS: adjust property names to correct format
TCAS Instrument: add configuration options
A320: remove un-needed folder
A320: update 3D model
Update 2020.3
Add new flightplan system and miscellaneous changes and improvements