Fixing partials for modern AMY

[bwhitman]

Fixes for #140 and #9.

I want @dpwe to look at this first. This apes what partials.c does with baked in patches, setting up the EGs in the same way. But to my ears, the default sleepwalk.mp4 example is "clickier" or more distorted. Luckily, we have an old render to compare against: https://github.com/shorepine/amy/blob/main/sounds/sleepwalk.mp4

To test this, try installing Loris in the new way as indicated in the README update:

python3 -m pip install pydub numpy --user
tar xvf loris-1.8.tar
cd loris-1.8
mkdir $HOME/.local # Just in case this doesn't exist
CPPFLAGS=`python3-config --includes` PYTHON=`which python3` ./configure --with-python --prefix=$HOME/.local
make
make install
cd ..

And then in python3:

import partials, amy; amy.live()
(m,s) = partials.sequence("sounds/sleepwalk_original_45s.mp3")
partials.play(s)