v5.0.0

This is the first stable release of the diox package.

What's Changed

• Change Dio.transformer from DefaultTransformer to BackgroundTransformer.
• Remove plain ASCII check in FormData.
• Allow asynchronized method with savePath.
• Allow data in all request methods.
• A platform independent HttpClientAdapter can now be instantiated by doing
  dio.httpClientAdapter = HttpClientAdapter();.
• Add ValidateCertificate to handle certificate pinning better.
• Support Content-Disposition header case sensitivity.

Breaking Changes

• Content type with application/json and application/x-www-form-urlencoded
  will not be implied anymore in the transformer and the request option.
• The default charset utf-8 in Headers content type constants has been removed.
• BaseOptions.setRequestContentTypeWhenNoPayload has been removed.
• Remove BaseOptions.setRequestContentTypeWhenNoPayload.
• Improve DioErrors. There are now more cases in which the inner original stacktrace is supplied.
• HttpClientAdapter must now be implemented instead of extended.
• Any classes specific to dart:io platforms can now be imported via import 'package:diox/io.dart';.
  Classes specific to web can be imported via import 'package:diox/browser.dart';.
• connectTimeout, sendTimeout, and receiveTimeout are now Durations.

Contributors

• @ueman made their first contribution in #12
• @domesticmouse made their first contribution in #56
• @kuhnroyal made their first contribution in #58
• @chenglu made their first contribution in #60