Updated changes description document
Reformat ISO 4 spaces gearwarning inside freeflight
fix critical bug in testbench mode inside gearwarning
Fix critical bugs in LXV7 EXPT and LX16xx RMB sentences
not checking existance of waypoint
Fix missing LKASSERT in CTaskFileHelper
Add support for Garmin HCHDG nmea sentence, showing magnetic heading
Merge branch 'master' of https://github.com/alus-/LK8000