Makes mobs always persistent. Mobs would never despawn! This datapack fixes some datapacks that have mobs that wasn't attended to despawn because the creator forgot to. There is 1 issue. Since squids don't despawn, there would be hundreds of squids, making your world delayed.
Every tick, the NBT: "PersistenceRequired" will be set to: "1b". Also the word: "persistent" is misspelled.