Updated to PixiJS v5.

lib/pixi/deepzoom/loader.js

@@ -84,7 +84,7 @@ export class PIXITileLoader extends TileLoader {
     constructor(tiles, compression) {
         super(tiles)
         this.destroyed = false
-        this.loader = new PIXI.loaders.Loader()
+        this.loader = new PIXI.Loader()
         this.loader.on('load', this._onLoaded.bind(this))
         this.loader.on('error', this._onError.bind(this))
         if (compression) {
@@ -256,7 +256,7 @@ export class RequestTileLoader extends TileLoader {
             }
             xhr.send()
         } else {
-            let texture = PIXI.Texture.fromImage('assets/image.png')
+            let texture = PIXI.Texture.from('assets/image.png')
             this._textureAvailable(url, col, row, texture)
             if (callback) callback()
         }