Version 3.6.17

• Added new record type for airport apron appearing since MSFS SU6 beta. Reading apron structure for new MSFS record. Disabled warning about unknown airport record types when compiling MSFS data. #799
• Fixed bug with wrong airspace assignment for class F and G when reading OpenAir files. #797
• Better coordinate parsing. Removing various separators now.
• Corrected MSFS dummy POI airport detection. Now ignoring airport closed flag which removes POI wrongly detected as airports.
• Corrected missing index in airport table slowing down searches by official airport ids.
• Added departure parking position heading to LNMPLN.
• Updated XSD flight plan schema.
• Fixed issue when calculating flight plans using radio navaids where too close navaids where selected enroute. Example: PAYA MDO ODK CDB ELF DUT PADK where CDB and ELF are too close resulting in zig-zag routing.
• Reduced warnings for unknown BGL records in MSFS to avoid flooding the log with messages when reading scenery.