EMI++

Version 1.2.1:

• feat: Add stack groups for Mekanism's materials and units;
• fix: Unable to search unbaked EmiStack by ID;
• fix: Unable to display craft-able items;
• fix: When the index panel is placed on the left side, EMI++ cannot be displayed properly;
• fix: When opening the inventory, the button click sound is played;
• fix: Incompatible with NeoForge's custom villager trades;
• fix: Glitches in Mekanism's multi-block machines;
• style: Clean duplicated mixin classes;