Servus: Alchemy

Added

• Citrinitas ritual: place three Principle Vats beside the Athanor's tanks and offer an Amethyst Block; yellow citrine grows out of the vats.
• Rubedo ritual: place four Obsidian behind the tanks and offer a Ghast Tear; dark red Rubedo Obelisks rise and the citrine turns orange.

Changed

• The Athanor has a new compact build: a 3 by 3 brick hearth with a stair in front, tanks three high and one Copper Duct each; existing Athanors must be rebuilt. Albedo is a Salt Crystal ring under the hearth.
• The formed Athanor is a brick tower with a black iron fire door whose window and dome vents glow in the stage colour.
• A broken part of the Athanor's build drops it back exactly as far as needed, and the crystals and obelisks of the lost stages turn back.