• Added --max-ppm <ppm> option which drops messages if their PPM error exceeds
  a configured threshold. This is useful for filtering out loud message
  crosstalk from adjacent channels and avoiding cross-channel duplicates (thx
  @f00b4r0).
• --oversample option may now be used for any input type, not only
  --iq-file.
• Decoding of raw frames from standard input is now done without buffering. This
  improves interaction with 3rd party message generators and simulators (thx
  @sbabbi).