Version 0.9: Added support for Permissions (node: alchemicalcauldron.use). Added more logging on strange situations (e.g. no player triggered event).
Version 0.8: Updated to CB612, allow creation of mob spawners. Note that similar to unkillable slimes, mob spawners will produce unkillable client-side pigs in addition to whatever they're configured to spawn. To create a spawner, specify the mob name (e.g. 'Sheep') for product_data and MOB_SPAWNER for product. I think.
Version 0.7: Added a /recipes command. secret: true recipes aren't displayed.
Version 0.5: Improved some error messages to make configuration more user-friendly.
Version 0.4: Added reagent3_quantity to require the player to provide more than one. Note: A limitation of recipe book means you still can only have one recipe for any R1+R2+R3. Todo: fix this.
Version 0.3: Fixed reagent3_consumed flag in recipe.
