Sets recipe to 1 wood input -> 4 coal output.

Makes tree farming for wood export viable for planets that do not have coal, or when coal is scarce.

If there is interest, I could make the recipe editable via in-game startup config options.

v1.1.1 - Adds a Sulfur Recovery recipe, 1 carbon + 50 Sulfuric Acid + some cold Fluoroketone = 3 sulfur.
The coolant is lossless but has to be recooled.

Forked from https://mods.factorio.com/mod/Charcoal_From_Wood