Fuji (Essentials)

Read detailed change logs in https://github.com/sakurawald/fuji/commits/dev/

• [jail] feature: jailed players now have their display names modified.
• [command_toolbox.nickname] feature: improve the compatibility with other mods.
• [world] refactor: remove the blacklist option to reduce confusion, as its functionality is covered by the --confirm.
• [placeholder] feature: now the %fuji:player_{prefix|suffix}% placeholder returns a dummy empty string if the specified player has no prefix or suffix. (Makes it easier to use)
• [core] feature: improve the error text for invalid placeholder arguments.
• [core] feature: enhance the validation for offline player name and offline game profile argument types to reject unknown player.