Pillow/docs/releasenotes/3.3.0.rst

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3.3.0
-----
Libimagequant support
=====================
There is now support for using libimagequant as a higher quality
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quantization option in ``Image.quantize()`` on Unix-like
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platforms. This support requires building Pillow from source against
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libimagequant. We cannot distribute binaries due to licensing
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differences.
New Setup.py options
====================
There are two new options to control the ``build_ext`` task in ``setup.py``:
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* ``--debug`` dumps all of the directories and files that are
checked when searching for libraries or headers when building the
extensions.
* ``--disable-platform-guessing`` removes many of the directories
that are checked for libraries and headers for build systems or
cross compilers that specify that information in via environment
variables.