Placeholder: current island exp / current island level exp

[king-glitch]

Description

I think it would be cool if you could add a placeholder for a current island exp/point and max current island level exp/point.

Like if you type /is level it will shows a island level and a next point to the next level.

Placeholder: [gamemode]_current_island_point
Placeholder: [gamemode]_current_island_level_point