- Load VNA config (and calibration) from file.
  The *.znxml file has to be prepared in advance and saved on the VNA.
  It needs to set the VNA to CW mode and single sweep.
- Trigger single sweep and wait for it to complete
- Fix trace definitions

- mostly whitespace and linebreaks
- no functional change

Change function name from uppercase to lowercase

*Get current cw frequency,
*Get current RF Power,
*Set cw frequency,
*Set Rf power