modtool: fixes case when modulname ends in 0
docs: Add support for swigdocs for QT keywords (signal, slot, property).
digital: making virtual destructor for constellation class.
filter: added exception when using interpolating filter with no taps provided.
filter: fixed pfb_arb_resampler to handle default taps (None) case.
digital: fixes for SNR ests.

set_history: you keep using that word. I do not think it means what you think it means.
video-sdl: fix typo in .pc file
Merge branch 'maint' into v3.6.4git_gras_support