修改版本号为1.0.21

Author: kuaidi100-api

README.md

@@ -28,7 +28,7 @@ java-demo使用和测试可参考[java-demo-test](https://github.com/kuaidi100-a
 
 ```css
 dependencies {
-	implementation 'com.github.kuaidi100-api:sdk:1.0.20'
+	implementation 'com.github.kuaidi100-api:sdk:1.0.21'
 }
 ```
 
@@ -38,7 +38,7 @@ dependencies {
     <dependency>
         <groupId>com.github.kuaidi100-api</groupId>
         <artifactId>sdk</artifactId>
-        <version>1.0.20</version>
+        <version>1.0.21</version>
     </dependency>
 ```
 

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.github.kuaidi100-api</groupId>
     <artifactId>sdk</artifactId>
-    <version>1.0.20</version>
+    <version>1.0.21</version>
 
     <name>api</name>
     <url>https://github.com/kuaidi100-api/java-demo</url>