Update InventoryGUISpaceCompound.kt

src/main/kotlin/net/axay/kspigot/inventory/elements/InventoryGUISpaceCompound.kt

@@ -23,7 +23,7 @@ class InventoryGUISpaceCompoundElement<T : ForInventory, E> internal constructor
 }
 
 class InventoryGUISpaceCompound<T : ForInventory, E>(
-    private val invType: InventoryType<T>,
+    val invType: InventoryType<T>,
     private val iconGenerator: (E) -> ItemStack,
     private val onClick: (InventoryGUIClickEvent<T>, E) -> Unit
 ) {