- Update to version 3.4
  New features:
  * Edge-aware quadtree partitioning to terminate CU depth
    recursion based on edge information. --rskip level 2 enables
    the feature and --rskip-edge-threshold denotes the minimum
    expected edge-density percentage within the CU, below which
    the recursion is skipped. Experimental feature.
  * Application-level feature --abr-ladder for automating
    efficient ABR ladder generation. Shows ~65% savings in the
    over-all turn-around time required for the generation of a
    typical Apple HLS ladder in Intel(R) Xeon(R) Platinum 8280
    CPU @ 2.70GHz over a sequential ABR-ladder generation
    approach that leverages save-load architecture.
  Enhancements to existing features:
  * Improved efficiency in 2-pass rate-control algorithm. The
    savings in the bitrate is ~1.72% with visual improvement in
    quality in the initial 1-2 secs.
  Encoder enhancements:
  * Faster ARM64 encodes enabled by ASM contributions from
    Huawei. The speed-up over no-asm version for 1080p encodes @
    medium preset is ~15% in a 16 core H/W.
  * Strict VBV conformance in zone encoding.
  Bug fixes:
  * Multi-pass encode failures with --frame-dup.
  * Corrupted bitstreams with --hist-scenecut when input depth
    and internal bit-depth differ.
  * Incorrect analysis propagation in multi-level save-load
    architecture.
  * Failure in detecting NUMA packages installed in non-standard
    directories.

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