Cooldowns are now a collection containing for keys the snowflakes and for values an object, this object has for keys the commands in cooldowns, and for values the cooldown length and the date when the command has been executed.
With setCooldown you can set the cooldown for a user.
With getCooldown you can get the cooldown of a user and the time to wait in milliseconds.
With isInCooldown you can know if a user is in cooldown.

All this handling is added in the default message event.