Sprite Objects don't work

[dschep]

Maputnik version: v2.1.1
Browser: All
OS: all

Description of the bug:

Steps to reproduce the behavior:

1. Load a style that uses Multiple Sprite Sources

Style file or style URL:
(this style also doesn't work due to relative URLs, but even if you fix those, you can't fix sprites.)
https://vector.openstreetmap.org/demo/shortbread/colorful.json

Screenshots:

[HarelM]

Yeah... Maputnik needs an overhaul in terms of supporting the latest style-spec...
Feel free to look into it...