Sum-of-all-parts Pricing#69

Have the price automatically adjust based on the sum of all parts or the recipe of an item. Meaning if I change the price of ACACIA_LOG for example, it would then change the price of ACACIA_PLANKS, ACACIA_BOATS, STICKS, etc. to reflect new values based on the price of raw material. This would be helpful in instances where I need to adjust the price of every single item that contains that material because I need to make 1 change. Instead of having to locate every single item that uses that material and change the price manually.