new file:   data/Elephant_sounds_rgUFu_hVhlk_roar_mono_tiny.wav
	modified:   package.json
	new file:   src/beat_detection.js
	modified:   src/cat_food_nation.js
	new file:   src/create_sin_curve_write_N_read.js
	modified:   src/iterate_mutate_judge.js
	new file:   test/launch_cat_food_nation.sh