Add custom data

[sylfel]

I start using Pixi some weeks ago, and it's quite good !
I use assetpack to define some texture and i want to use "pixel" texture, so , actually i use this code :

const t = Texture.from(image)
t.baseTexture.scaleMode = SCALE_MODES.NEAREST

Is it possible to define SCALE_MODES direct in asset pack definition ?
I find a possibility with #32 to add custom data... but there's no example, nor test