add new liquids

Add mercury: this can alter the properties of gold, making it the same color as the liquid.  (i.e., change it from gold to iron). 
Add that copper can be used as wiring, since copper can distribute energy with lightning rods. It can be placed on walls, but how do you nail it? Easy! Wooden nails are made with two blocks of wood (it varies depending on the type of wood). Add support for mods and add emojis