v1_05

• updated to 1.20.1

v1_03

• added sounds under the 'players' category (specifically block.note_block.hat @ pitch 1.5x for enabling locking on a slot, and block.note_block.basedrum @ pitch 0.9x for disabling locking of a slot)

v1_02

• updated the texture
• fixed bug where having your offhand blocked but not your selected slot locked stops you from dropping stacks in your selected slot

v1_01

Added everything that should be there and nothing that won't be there.