Scrapy-zyte-api

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Fixed incorrect 0.4.0 release.

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* Requires a more recent Python client library zyte-api_ ≥ 0.3.0.

* Stats from zyte-api are now copied into Scrapy stats. The
``scrapy-zyte-api/request_count`` stat has been renamed to
``scrapy-zyte-api/processed`` accordingly.

.. _zyte-api: https://github.com/zytedata/python-zyte-api

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* ``CONCURRENT_REQUESTS`` Scrapy setting is properly supported; in previous
releases max concurrency of Zyte API requests was limited to 15.
* The retry policy for Zyte API requests can be overridden, using
either ``ZYTE_API_RETRY_POLICY`` setting or ``zyte_api_retry_policy``
request.meta key.
* Proper response.status is set when Zyte API returns ``statusCode``
field.
* URL of the Zyte API server can be set using ``ZYTE_API_URL``
Scrapy setting. This feature is currently used in tests.
* The minimum required Scrapy version (2.6.0) is now enforced in setup.py.
* Test and documentation improvements.

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* Remove the ``Content-Decoding`` header when returning the responses.
This prevents Scrapy from decompressing already decompressed contents done
by Zyte Data API. Otherwise, this leads to errors inside Scrapy's
``HttpCompressionMiddleware``.
* Introduce ``ZyteAPIResponse`` and ``ZyteAPITextResponse`` which are subclasses
of ``scrapy.http.Response`` and ``scrapy.http.TextResponse`` respectively.
These new response classes hold the raw Zyte Data API response in the
``raw_api_response`` attribute.
* Introduce a new setting named ``ZYTE_API_DEFAULT_PARAMS``.

* At the moment, this only applies to Zyte API enabled ``scrapy.Request``
(which is declared by having the ``zyte_api`` parameter in the Request
meta having valid parameters, set to ``True``, or ``{}``).

* Specify in the **README** to set ``dont_filter=True`` when using the same
URL but with different ``zyte_api`` parameters in the Request meta. This
is a current workaround since Scrapy will tag them as duplicate requests
and will result in duplication filtering.
* Various documentation improvements.

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* Initial release