What's new:
- changed the default alternative server list URL (from HTTP to HTTPS)
- added text and automatic messages for entering and leaving airspace
- Scheduler: Added the option to close all servers and optionally shut down the PC
- implemented additional database checks
- performed many optimizations and bug fixes
- implemented parallelization for email functions
- fixed IP detection, which sometimes returned the IPv6 address instead of the IPv4 address
- fixed a rare exception that could occur when closing DSHelper
- DSHelper regains focus after starting a dedicated server
- added automatic startup (after 10 seconds) of DSHelper and previously running servers after a PC reboot (Settings)
- switched from GET to POST for uploading race results to CondorClub