fix(trifles): prevent in-inventory item placement into stacked storage items (fixes #206)

Author: oddlama

vane-trifles/src/main/java/org/oddlama/vane/trifles/StorageGroup.java

@@ -54,7 +54,7 @@ public void on_place_item_in_storage_inventory(InventoryClickEvent event) {
 
 		// Put non-storage items in a right-clicked storage item
 		if (event.getClick() == ClickType.RIGHT && event.getAction() == InventoryAction.SWAP_WITH_CURSOR
-				&& is_storage_item(event.getCurrentItem())) {
+				&& is_storage_item(event.getCurrentItem()) && event.getCurrentItem().getAmount() == 1) {
 
 			// Allow putting in any items that are not a storage item, or storage items that have nothing in them.
 			if (!(is_storage_item(event.getCursor()) && event.getCursor().hasItemMeta())) {