datapacks

• Copper Powered Rails: Copper alternate recipe for powered rails, at half efficiency
• green_dye: green dye from mixing blue/yellow dye, green sheep from breeding blue/yellow sheep
• Sandy Husks: husks drop sand, increasing with looting
• Tangent's Vanilla Recipes: various things I felt were missing or minor quality improvements

Reversible Crafting Recipes

• Amethyst Recovery: amethyst blocks -> amethyst shards
• GiveMyQuartzBackDatapack: quartz blocks -> quartz