* Add min, max settings for pwr control
* Add testing mode if no xcvr serial port available
* Made opMODE and opBW combo controls readonly
- pull down values can only be added and not inserted
* Added debugging tags to xml definitions:
- <NOSERIAL>true/false</NOSERIAL> - default false
suppress all serial port i/o
- <ASCII>true/false</ASCII> - default false
if true, print all CAT i/o events as ASCII strings
if false, print all CAT i/o events as HEX sequences
* Added polling for pwr level query
* Separated no xcvr functions from rigcat loop operation
* Corrected hamlib start/stop process to prevent
lockup when xcvr is not responding to CAT commands
- hamlib still creates a zombie process when trying to access
a bogus serial interface such as a bell modem
* Added string / hex data LOG view
<LOGSTR>true/false</LOGSTR>
* Added variable loop timing
<POLLINT>100...20000</POLLINT>
default 100 msec
* Corrected use of BW-REPLY and MODE-REPLY in xml def file
* Added ability to read and display Smeter and Pwr meter
* Added debugging statements to exit functions
* Fixed aberrant save frequencies2.txt file behavior
* Added manual notch read/write using waterfall
notch filter interface
* Added power level control for xcvrs with that CAT command
- set power level also used for logging
* Updated tutorial on transceiver xml definition file structure.
* Added <VERBOSE>bool</VERBOSE> specifier
- use during development of an xml file
David Freese