Merge branch 'master' of github.com:vranki/ExtPlane

Fixes and enhancements to UDP protocol support

Merge pull request #69 from StefanLobas/master

Changed the logic to detect new values for float and int arrays.

Fix get command if ref already subscribed, document get

Fix reconnecting

Fix broken Qt version check to compile linux extplane-transformer in ci

Updated cross-compilation env to bionic

Minor fixes

Fixes, especially for Qt client. New EXTPLANE-WARNING message.

Fixed connection issue & docker / ci build