FIXED: lf t55xx fsk now demods but only to binary.

ADD:  holimans lf io / hid fskdemod  changes.

client/proxmark3.c

@@ -48,6 +48,11 @@ void SendCommand(UsbCommand *c) {
       return;
     }
 
+	/**
+	The while-loop below causes hangups at times, when the pm3 unit is unresponsive
+	or disconnected. The main console thread is alive, but comm thread just spins here.
+	Not good.../holiman
+	**/
   while(txcmd_pending);
   txcmd = *c;
   txcmd_pending = true;