pothos-widgets: keep log10 input within domain
pothos-widgets: added parameterized kaiser window
pothos-util: added WindowFunction to util module
pothos-widgets: switch plotters to new window function
pothos: added window documentation comments
pothos-widgets: added complex value slot to TextDisplay
pothos-widgets: work adding center freq to plotters
pothos-widgets: drop down combobox for num FFT bins
pothos-widgets: added center freq to spectrogram
pothos-widgets: simplfy wave plotter axis update
Merge branch 'plotter_center'
pothos-widgets: work on wave monitor with markers
Merge branch 'master' into sporadic_labeler

Conflicts:
	pothos-widgets/WaveMonitor/WaveMonitor.hpp
pothos-widgets: wave monitor plots labels as markers
pothos-widgets: simplify data type params with DTypeChooser
pothos-widgets: make Periodogram dtype independent
pothos-widgets: make spectrogram type independent
pothos-widgets: make wave monitor type independent