This is primarily to change all instances of wxLogDebug with wxLogTrace
so developers do not have to sift through debugging output that is always
dumped. The only exception is for code blocks built in debug builds and
called on demand for dumping object states.
1) Don't read libraries multiple times
2) VDMOS default is nchan if not specified
3) In the absence of a workbook default to LTSpice compatability
4) Don't attempt to write out a model line for a subckt; it never has
a baseModel
* Add compare method to COLOR4D object.
* Add unit test to validate COLOR4D comparison method.
* Add missing color test in text attribute comparison method.
* Add unit test for text attribute object.
* Remove unnecessary headers from text attribute header.
* Move text attribute code into separate source file.
