Fixed #1111 Add module for sliding dot product; Include pyfftw as (soft) dependency#1118

NimaSarajpoor wants to merge 2 commits intostumpy-dev:mainstumpy-dev/stumpy:mainfrom

NimaSarajpoor:enhance_sliding_dot_productNimaSarajpoor/stumpy:enhance_sliding_dot_productCopy head branch name to clipboard