publish 0.5.3

CHANGELOG.md

+## 0.5.3
+* 修复唤起小程序返回值类型不一致的问题。
+
+
 ## 0.5.2
 * 修复ios上sendAuth无返回的问题。
 * kotlin升级至1.3.10

pubspec.yaml

 name: fluwx
 description: A implement of WeChatSDK on Flutter.Fluwx makes possible using WeChatSDK in Flutter.Enjoy sharing or payment in Flutter.
-version: 0.5.2
+version: 0.5.3
 author: JarvanMo <jarvan.mo@gmail.com>
 homepage: https://github.com/JarvanMo/fluwx