[x265] [ANN]x265 version 3.2 released

[Aruna Matheswaran]

x265 version 3.2 is out with cool feature additions including hierarchical
motion estimation, selective SAO, and Edge-based AQ.

Version 3.2 can be downloaded from here
<https://bitbucket.org/multicoreware/x265/downloads/x265_3.2.tar.gz> (MD5
sum is 374e6359a00d17fd82195c02c341c861). Full documentation is available
in our release notes
<https://x265.readthedocs.io/en/default/releasenotes.html#version-3-2>.

Release Notes of version 3.2
======================

New features
------------------
1. 3-level hierarchical motion estimation using :option:`--hme` and
:option:`--hme-search`.
2. New AQ mode (:option:`--aq-mode` 4) with variance and edge information.
3. :option:`selective-sao` to selectively enable SAO at slice level.

Enhancements to existing features
----------------------------------------------
1. New implementation of :option:`--refine-mv` with 3 refinement levels.

Encoder enhancements
--------------------------------
1. Improved quality in the frames following dark scenes in ABR mode.

API changes
-------------------
1. Additions to x265_param structure to support the newly added features
:option:`--hme`, :option:`--hme-search` and :option:`selective-sao`.

Bug fixes
-------------
1. Fixed encoder crash with :option:`--zonefile` during failures in
encoder_open().
2. Fixed JSON11 build errors with HDR10+ on MacOS high sierra.
3. Signalling out of range scaling list data fixed.
4. Inconsistent output fix for 2-pass rate-control with cutree ON.

Known issues
-------------------
1. Build dependency on changeset cf37911 of SVT-HEVC.

Happy compressing!!

Regards,
Aruna
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