Release v2.1.0-beta1

Use `(string) $body` instead of `$body->getContents()` for getting co…

Release v2.0.20

Optimized the exceptions thrown by `Json` and `Xml`. (#2821)

* 统一InvalidArgumentException错误抛出及捕获

* Added test cases.

Co-authored-by: 李铭昕 <[email protected]>

Release v2.0.19

Fixed response body does not exists when bad request. (#2803)

* Fixed response body does not exists when bad request.

* Update JsonParser.php

* Update CHANGELOG-2.0.md

Release v2.0.14

Merge branch 'master' into pr/1969

Release v2.0.11

Added auto release. (#2457)

v1.0.0

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