ZiHang Gao

Add jwt library as a c extension

2

Add JSON Web Toke (JWT) library as a c extension.

Fixed #91

flutter_inappwebview is not working.

2

I want to `HeadlessInAppWebView` is used in `flutter_isolate`, but it does not work. ## Example code ``` import 'package:flutter/material.dart'; import 'package:flutter_isolate/flutter_isolate.dart'; import 'package:flutter_inappwebview/flutter_inappwebview.dart'; void main() async { runApp( MaterialApp( home:...

Because jsonnet dependent on json extension, need to check the json extension in advance.