title: How can I submit custom feature extraction methods to music21?
body: <p>I'm trying to figure out if I'm able to submit any of my custom music21 feature extraction methods to music21. </p>
  
  <p>for my undergraduate research position at Ohio State, I'm have to create custom methods to extract necessary features for my model. I had to create all of these methods because I wasn't able to find them in the music21 documentation. Some of these methods could be important and I feel like they could be useful for other people who are using music21 to extract music features.</p>