Support flutter 1.22.0

[hamberluo]

../../Dev/flutter/.pub-cache/hosted/pub.flutter-io.cn/flutter_stetho-0.5.2/lib/src/http_client_request.dart:10:7: Error: The non-abstract class 'StethoHttpClientRequest' is missing implementations for these members:
 - HttpClientRequest.abort
Try to either
 - provide an implementation,
 - inherit an implementation from a superclass or mixin,
 - mark the class as abstract, or
 - provide a 'noSuchMethod' implementation.

class StethoHttpClientRequest implements HttpClientRequest {
      ^^^^^^^^^^^^^^^^^^^^^^^
org-dartlang-sdk:///third_party/dart/sdk/lib/_http/http.dart:2045:8: Context: 'HttpClientRequest.abort' is defined here.
  void abort([Object? exception, StackTrace? stackTrace]);
       ^^^^^

[chainchelliah]

Yes!!! Same Error for me also. Please fix it.
Thanks.

[RadheshyamSingh]

I am also facing this issue.

For me #39 (comment) working