add deprecated stringName and change paperweight userdev version

src/main/kotlin/net/axay/kspigot/items/KSpigotItems.kt

@@ -117,6 +117,15 @@ var ItemMeta.name: Component?
     get() = if (hasDisplayName()) displayName() else null
     set(value) = displayName(value ?: Component.space())
 
+/**
+ * Provides safe access to the items' displayName.
+ */
+@Suppress("DEPRECATION")
+@Deprecated("displaynames are saved as Components in Paper", ReplaceWith("name", "net.axay.kspigot.Items.name"))
+var ItemMeta.stringName: String?
+    get() = if (hasDisplayName()) displayName else null
+    set(value) = setDisplayName(if (value == null || value == "") " " else value)
+
 /**
  * Provides safe access to the items' customModelData.
  */