alpha 4.1.14.19

  wf
    * change waterfall signal processing path to always include
      sample rate conversion to a fixed waterfall sample rate
      - srate = 8000

  fmt modem
    * Frequency Measurement Test modem
      - similar to analysis mode
      - tracks to signals simultaneously
        . unknown signal
        . local reference signal, high precision oscillator
          possibly GPSDO
    * signal processing filters use FIR lowpass @ 4 Hz cutoff
      - selectable filter width in Hertz
      - selectable data moving average filter time constant in seconds
    * unknown/reference track assignable using waterfall cursor
      - SHIFT - left click for unknown signal
      - CONTROL - left click for reference signal
    * recorded data saved in fmt directory
      - ~/.files/fmt
      - c:\Users\<login>\fldigi.files\fmt
      - date/time stamp
        fmt-YYYY.MM.DD.HH.MM.SS.csv
    * Add wav file recording
      - saved to fmt files folder
      - filename automatically date-time stamped
      - new file created each time recording enabled
      - user selectable
        . arbitrary start/stop
          fmt-YYYY.MM.DD.HH.MM.SS.wav
        . start/stop sync'd to data recording
          filenames will have identical date-time stamp
          fmt-YYYY.MM.DD.HH.MM.SS.csv
          fmt-YYYY.MM.DD.HH.MM.SS.wav
    * Add user selectable audio code sample rate
      - 8000, 11025, 12000, 16000, 22025, 24000, 44100, 48000

  Navtex
    * Fix and simplify the correlator
      - Make sure the correlator only ever jumps +delta or -delta to
        the early or late accumulator, and never the long way around.
      - The adjustment limiting code had a bug that never seemed to break
        anything; simplify that code by removing the special case.

  debug source
    * remove deprecated misc/debug.cxx
    * prevent copying an empty file in aging function

  cluster dupcheck
    * add dupcheck to dxcluster CALL select

  XmlRpc Exit
    * Suppress exit confirmation in xmlrpc terminate

  Macros
    * Added macro to clear QSO fields