added getSlotsByCount

src/lib/turtle/InvState.hx

@@ -96,4 +96,16 @@ abstract InvState(Map<TurtleSlot, {count:Int, name:Item, max:Int}>) {
 
 		return null;
 	}
+
+	/**
+		Get all slots with items sorted from low to high.
+	**/
+	public function getSlotsSortedByCount():Array<TurtleSlot> {
+		var keys = [for (k in this.keys()) k];
+		keys.sort((a, b) -> {
+			return this.get(a).count - this.get(b).count;
+		});
+
+		return keys;
+	}
 }