Light Level Sensor

Adds a tool to get the light level inside or above a node

Adds a tool to get the light level inside or above a node,simply right click the node to get the light level inside it or left click it to get the light level above it

Special thanks to:

-MineTest dev wiki. -Rubenwardy's modding book. -The modding community I wouldn't have learnt about the concatenation operator without reading other mods' source code.