发布新版本

CHANGELOG.md

+## 1.9.1+1
+
+  Rename the version number and start supporting androidx by default, Based on the flutter 1.9.1 - hotfixs。
+  fixed bugs
+
 ## 0.1.66
 
   Fixed bugs

pubspec.yaml

 name: flutter_boost
 description: A next-generation Flutter-Native hybrid solution. FlutterBoost is a Flutter plugin which enables hybrid integration of Flutter for your existing native apps with minimum efforts.
-version: 0.1.66
+version: 1.9.1+1
 author: Alibaba Xianyu
 homepage: https://github.com/alibaba/flutter_boost