Reading SDRangel SigMF files

[PeteK6TJ]

SDRangel seems to write ci32 SigMF files, which it seems neither inspectrum nor gnuradio can read as SigMF. But in the inputsource.cpp source file of inspectrum, I added a ci32_le type entry and created a S32 sample converter (and a few others) by straightforward plagiarizing of the sample converters already in there. Now I can snoop around for short packets with SDRangel (which has a fast display), save a giant file, and use inspectrum to find what I want to analyze in gnuradio. Open and closed feature request??