* FCB/CRC check on each transmission (if enabled via -k)

* Defaultports 4000 / 40000 changed to 2202 / 2203 because 4000 is a
  port for a trojan horse. 

* The flightlist is now based on IATA/ICAO codes instead of free text
  entries. 

* via flights can be included in your flight database. 
  See the first lines of flights.txt for details

* acarsdb now know the new option -t AIRPORTS to include the list of
  known airports

* acarsd has a new option -v to disabled the airport resolution and to
  display only the flightnumber with the destination and the arrival
  airport with IATA/ICAO codes
  use only on slow systems or if you have low memory

* acarsd rejects update requests for flights when the arr/dep
  airportcode is now 3/4 chars. 
  THERE IS NO CONTROL FOR EXISTEND AIRPORTS

* max clients of acarsd is set to 64 instead of 32

* acarsdm sends messages to all connected clients
  for example: ./acarsdm "Hi peoples. Have a nice day :)"

