SoundJS 2.0 uses `loops` instead of `loop`

[probityrules]

For backwards compatibility, I might recommend making this options.loop instead of options.loops. Unless maybe it's going to behave functionally different from the original 1.0 loop property?

SoundJS/src/Playback.js

Line 72 in 03191e6

let loops = Number(options.loops);

(It took me some time to figure out that the spec for this changed, so I wanted to note it here.)