added Energy extractor yay!
energy + spectrum added

decided to only call it spectrum because we can’t get phase spectrum
anyway (yet). Audio broken again in firefox.
added spectralSlope and a mean of array function

nothing is tested though as nothing works on my computer
simplified index
fixed small error and added console logs
removed UI except for audio controls
it is now displaying numbers
stuff
added size to array
new architecture
features are now working
Merge pull request #3 from hughrawlinson/new-architecture

Fixed features