- Support 10 and 12 bit color depths
- Update to version 3.0
  New features
  * option:: '--dolby-vision-profile <integer|float>' generates
    bitstreams confirming to the specified Dolby Vision profile.
    Currently profile 5, profile 8.1 and profile 8.2 enabled,
    Default 0 (disabled)
  * option:: '--dolby-vision-rpu' File containing Dolby Vision RPU
    metadata. If given, x265's Dolby Vision metadata parser will
    fill the RPU field of input pictures with the metadata read
    from the file. The library will interleave access units with
    RPUs in the bitstream. Default NULL (disabled).
  * option:: '--zonefile <filename>' specifies a text file which
    contains the boundaries of the zones where each of zones are
    configurable.
  * option:: '--qp-adaptation-range' Delta-QP range by QP
    adaptation based on a psycho-visual model. Default 1.0.
  * option:: '--refine-ctu-distortion <0/1>' store/normalize ctu
    distortion in analysis-save/load. Default 0.
  * Experimental feature option:: '--hevc-aq' enables adaptive
    quantization. It scales the quantization step size according
    to the spatial activity of one coding unit relative to frame
    average spatial activity. This AQ method utilizes the minimum
    variance of sub-unit in each coding unit to represent the
    coding unit's spatial complexity.
  Encoder enhancements
  * Preset: change param defaults for veryslow and slower preset.
    Replace slower preset with defaults used in veryslow preset
    and change param defaults in veryslow preset as per
    experimental results.

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