Make latitude and longitude of local receiver configurable (for range calculation)
Print receiver range statistics in the log every N seconds, if requested.
This feature makes it easier to quickly see if the receiver is performing
as expected, when running gnuais on a remote site on a little
Raspberry Pi or some other computer with no GUI, or remotely over ssh.
Separate range statistics for both channels
Unified channel ID in logging: A/B instead of 0/1 everywhere, consistently.
Merge pull request #3 from hessu/distance

Print receiver range statistics in log, every N seconds, if requested