Implemented new recipes for Gunpowder, Saltpeter, Sulfuric Acid
Gave Sulfur dust a burn value (1600, the same as coal)
Made all chemical recipes stoichiometrically correct whenever possible
(2 H + 1 O -> 1 H2O instead of 2 H + 1 O -> 3 H2O)
Added a convenience method to Materials that lets you get dust
succinctly
Put all simplified recipe additions in a separate method, the config is
still missing
1f83a98876