0.3.0

This release was entirely focused on adding Audio support for S2D.
The audio system uses miniaudio scala bindings as the backend.

• Added the audio package. (s2d.audio)
• Sound.scala file for one-shot sounds like SFX
• Music.scala file for long looping tracks.
• pitch and volume controls.
• playback controls.

Tested formats: MP3 & WAV.

Full Changelog: 0.2.2...0.3.0