QA: Missed one music test, fixed
specest_from_file: Update to 3.7 and minor refac
pad_vector 37ized
moving_average_vff 37ized
reciprocal_ff 37ized
stream_to_vector_overlap 37ized
Fixed most of the Python (3.7 upgrade). Lots of refactoring.
adaptiveweighting_vff 37ized
All atomic AR blocks 37ized
esprit_vcf 37ized