Olimpos Core

Performance
- Item Obliterator: checking whether an item is blacklisted by NBT turned the item's whole NBT into text once per blacklist entry. It runs on every inventory slot of every player on every server tick, and on every item when creative tabs are built. Now the text is built once per check. Same result.
- BCLib (BetterEnd / BetterNether hammer recipes): the hammer list of each anvil recipe was rebuilt from the whole item list every time something asked for the recipe's ingredients (KubeJS, Quark, JEI). Now it is built once per recipe and rebuilt only when tags reload. About 2 seconds less on every datapack load.
- Ancient Elements: the Auto Smelt and Frost Aspect enchantments built a list of about 200 items every time the game asked whether they fit an item. The answer is now remembered per item. About 6 seconds less of JEI loading.
- JEI: when the potion recipe cache has to be rebuilt, each potion ingredient is checked once instead of once per potion.