Defined ZephyrJS Audio Scope

[OttCS]

ZephyrJS must add something that is entirely unique to Audio, which warrants the creation and not use of Pixi.Sound.

[OttCS]

Two types of ZephyrJS Audio sprites: direct and spatial.

Spatial should have a "source" they are associated with, as well as a "listener." The player function will take care of properly using the webaudio panner node to place it correctly in space.

Implemented. Direct lets the dev set specific gain/pan

[OttCS]

ZephyrJS Audio sprites should have extremely easy creation, with a good storage backend to eliminate duplicated buffers.

Shared buffer and AudioContext backend for both Direct and Spatial (Good performance, low memory usage)

[OttCS]

Direct audio should have a simple "gain" attribute for setting the volume and "pan" for left/right, which get created in nodes on a play() call.

Gain and Pan working

[OttCS]

Clean up finished/dead Audio Nodes so there isn't a memory leak.

According to this:
https://stackoverflow.com/questions/8037930/cleanup-of-audionodes-in-web-audio
Cleanup isn't needed. Nulling out memory might be useful thouh, so adding a Set to store nodes that when stop() gets called, it disconnect, nulls, and removes.

[OttCS]

DirectAudio now has loop and speed options, as well as a much better constructor

[OttCS]

Autoplay is in progress, but it doesn't work until user interaction with the page.