New effect: Bars
Better frequency scaling by modifying parameters in melbank.py
Mel graph [before](https://imgur.com/a/xN9PA), [after](https://imgur.com/a/YYGLk)
This stretches out the lower end with vocals and bass, and squishes up the high end which usually takes up moer space on the strip for similar "sounds". Now it looks more like you would expect it to, based on what you hear (more pitch-like than frequency)
