Charmonium

1.19 exclusive changes

• Added deep dark ambience.

4.1.0

• Rewritten to handle volume scaling.
• Replaced lush caves ambience with a new sound that is less drone-like.
• Added ambience silencing above ground with configurable number of blocks.
• Added biome ambience that blends across biome borders.
• Added configurable output channel, defaulting to "ambient".