Ore grinding/doubling upgrade

[twothe]

This backpack mod is amazing and finally allows me to explore the world with my "base" on my back. While the backpack is amazing there is a big issue when it comes to ore handling, namely that when playing basically any mod-pack out there then ore-doubling is a thing. Sadly Backpacks can't do that.

As a feature I would love to see an ore grinding upgrade in both basic and advanced form (the later with auto-pulling) running on fuel like the smelter.