Reverted mlat-client version back to 0.2.6 by default.
Reverted mlat-client version back to 0.2.6 by default.

jprochazka/adsb-feeder,jprochazka/adsb-receiver,jprochazka/adsb-receiver,jprochazka/adsb-receiver,jprochazka/adsb-receiver,jprochazka/adsb-feeder,jprochazka/adsb-feeder,jprochazka/adsb-receiver,jprochazka/adsb-feeder,jprochazka/adsb-feeder