Wed Jan 20 14:32:00 2021 -0600  alpha  1.3.53.26

  Check PTT
    * add check for NON CAT ptt configuration

  xmlrpc server
    * correction to data types
    * change zmsec computation
    * allow xmlrpc requests for get/set_power & get_pwrmeter
      direct access to xcvr i/o.
    * add xmlrpc command rig.tune
      . enable transceiver tune function
    * update xmlrpc server method list to correctly indicate
      signature <ret:arg> types
    * rewrite set numeric as integer
    * add xml_trace statements to get/set
      . volume, mic gain, rf gain, power control

  IC7300
    * Add get/set trace statements

  FT817ND
    * add trace statements for testing

  FT847
    * add get_modetype

  macOS serial ports
    * update serial port detection function

  PowerSDR
    * Added PowerSDR transceiver
    * compatible with Thetis

  BigSur serial ports
    * Modify port discovery for Big Sur naming convention

  Break-in
    * Add break-in selection for transceivers which support
      set / get CAT commands for break-in
      - Icom, Yaesu
      - Change enable_break_in to set_break_in
      - Add get_break_in
        . method
        . polling

  Bands
    * Add missing 1.2 GHz save/restore

  IC7300 power table
    * modify power table conversion method

  Pmax
    * return maximum available power to rig.get_pwrmax

  Autostart
    * Changes to transceiver autostart methods in supported
      transceivers

  IC7100 auto ON/OFF
    * rewrite autostart processing to show time for
      xcvr setup.  7100 takes about 5 seconds from a
      CAT wakeup command to when it can process additional
      commands

  Trace/Debug
    * Disable text widget update if respective dialog not visible
    * Clear Fl_Text_Display buffer when buffer length exceeds 100000
      This will prevent excessive use of memory and possibility of
      segmentation fault caused by the text display widget.

  FT736R update
    * added mode type method

  TOD clock
    * correction to millisecond field

  Icom sliders
    * adjust min power for 7100, 7300, 9100, 9700

  Version 1.3.53