Saves and reloads item cooldowns whenever you leave and rejoin the world or change dimension.
By default, vanilla minecraft doesn't save item cooldowns (e.g ender pearl, shield, goat horn), so if you are using a mod that adds longer cooldowns to items these will be reset to 0 seconds upon rejoining a world or entering a different dimension. This mod makes it so all item cooldowns are saved to prevent cooldown resets and ensure items are balanced.
The way this mod achieves this is by saving the remaining duration of all your item cooldowns, then applying them as a new cooldown on reload. As a result you will have the same remaining item cooldown, though the cooldown slider will appear starting from the top of the item in your hotbar again.
