Added 'black' to setup.py

Author: Spijkervet

setup.py

@@ -22,7 +22,7 @@
 
 # What packages are required for this module to be executed?
 REQUIRED = ["numpy", "torch", "torchaudio", "julius", "wavaugment", "torch-pitch-shift"]
-TEST_REQUIRED = ["pytest"]
+TEST_REQUIRED = ["pytest", "black"]
 
 # What packages are optional?
 EXTRAS = {