-added new fluid: "acid"
-added new items: "acid ball" and "acid spore"
-added a new recipe for acid (brewing)
-added new tool: "portal gun"
-added new sperimental item: "black orb" (uncraftable)
-added new block: "acid block"
-added new entity: "acid slime"
-added new enchantments: ("critical", "extra life", "first strike", "last chance", "multi hit", "super hit")
-added new arrows: ("big arrow", "gravitational arrow", "speedy arrow", "ultra explosive arrow")