AppImage for 2020.2.1 RC

[enrogue]

Latest RC of 2020.2.1 AppImage is here:

www.dropbox.com/s/5plaxf4tgn6sb2k/Fligh ... Image?dl=0

Compiled on Centos 7 (had to switch to a VM) flagged as RelWithDebInfo

Tested on Ubuntu 20.04 & Manjaro - it only contains the binary part, you'll need to grab/update your FGData separately

No issues that I can see, but I've really only tested a couple of aircraft

run with --launcher to get the launcher