added check for [bins] argument in fft method of P5, along with unit Test( in es6 style)#440
Draft
endurance21 wants to merge 6 commits intoprocessing:mainfrom 
Draft
added check for  [bins] argument in fft method of P5,  along with unit Test( in es6 style)#440endurance21 wants to merge 6 commits intoprocessing:mainfrom 
endurance21 wants to merge 6 commits intoprocessing:mainfrom