Revisit/Redo Fading Mechanic

[xNul]

The fading mechanic is kind of neat, but can make the visualizer a little bit harder to look at. I wish to add a toggle when I implement the settings panel with this feature turned off by default.

Ideas:

• add fade bloom: this way the spectrum itself doesn't have to fade and the mechanic can still be shown off
• add fade transition softening: when a song goes from quiet to loud or the opposite, the fade transition can seem abrupt and a bit annoying

[xNul]

The two ideas will be put on the back burner for new visualization ideas.