1.2.0:
* JSON from the standard library is used automatically on PyPy.
* Support for Python versions which are end-of-lifed was dropped,
Python >= 3.5 is supported and tested in continuous integration.
* An API to configure the underlying JSON library was added
(set_json_library).
1.3.0:
* The minimum version of simplejson was bumped to 3.14.0.
* Obsolete workaround for slow encoding of Unicode characters was
removed.
* New APIs were added to iteratively encode JSON.
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