This closes #833, closes #845, and closes #1022, breaking changes

- Close spreadsheet and row's iterator required
- New options `WorksheetUnzipMemLimit` have been added
- Improve streaming reading performance, memory usage decrease about 93.7%

1 files changed, 9 insertions, 1 deletions

diff --git a/README_zh.md b/README_zh.md
index 359192b..3b90eec 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -96,6 +96,10 @@ func main() {
         }
         fmt.Println()
     }
+    // 关闭工作簿
+    if err = f.Close(); err != nil {
+        fmt.Println(err)
+    }
 }
 ```
 
@@ -199,10 +203,14 @@ func main() {
     }`); err != nil {
         fmt.Println(err)
     }
-    // 保存文件
+    // 保存工作簿
     if err = f.Save(); err != nil {
         fmt.Println(err)
     }
+    // 关闭工作簿
+    if err = f.Close(); err != nil {
+        fmt.Println(err)
+    }
 }
 ```