Placed models can work as furnaces

New

• A placed model can now work as a real furnace, smoker or blast furnace. Add furnace: true (or furnace: smoker) under place: and right-clicking it opens the normal furnace screen, with fuel, recipes and experience working as usual. lit-model gives it a different look while it burns.

Fixed

• solid: true models can now be clicked and broken reliably. Most clicks used to land on the invisible barrier and do nothing.