Folia support and other minor improvements

Trading

Typing only /buy or /sell will trigger a market order to trade item on your right hand

You can also type 'hand' to reference the item you're holding. Ex:

/sell hand 4 32

(Sells 4 items from your hand at price of 32)

Compatibility and optimization

• Full support for Folia servers
• Database queries now run async preventing slowing down main thread
• Now claimed entities lookup only scanns for entities that are 20 blocks away from you