Copper Factory

-Added a new copper oxidizing mechanic using water cauldron (works with all oxidizable blocks).

-Added a new copper waxing/unwaxing mechanic using the new wax cauldron and the water cauldron respectively.

-Blocks now properly stack with each other when cooled down.

-Fixed the edgecase bug where two batches could sometimes stack in the same cauldron.

-Blocks can now be inputed and outputed of cauldrons at any stage of their transformation, including initial stage.