AlchemyLib 1.21.1-1.1.6 RELEASE

Shared library for Alchemistry and other ChemLib add-ons.

Changes:

• Fixed a crash at world creation when a recipe uses a NeoForge custom or compound ingredient.
• Fixed recipes silently merging tag-backed, custom, or multi-item ingredient inputs that should stay distinct.
• Added persistent recipe selection: processing machines can remember the recipe the player chose in the recipe selector instead of reverting to the first matching recipe.
• Fixed machine screens rendering with a much darker background than vanilla container screens.