Merge pull request #696 from jason-liu475/v5-master

重写hashCode和equals

hutool-setting/src/main/java/cn/hutool/setting/Setting.java

@@ -223,6 +223,7 @@ public class Setting extends AbsSetting implements Map<String, String> {
 	 *
 	 * @return 键值总数
 	 */
+	@Override
 	public int size() {
 		return this.groupedMap.size();
 	}