• Minor speed optimization for LZMA2 (xz and 7z) multi-threading compression.
  7-Zip now uses additional memory buffers for multi-block LZMA2 compression.
  CPU utilization was slightly improved.
• 7-zip now creates multi-block xz archives by default. Block size can be
  specified with -ms[Size]{m|g} switch.
• xz decoder now can unpack random block from multi-block xz archives.
  7-Zip File Manager now can open nested multi-block xz archives
  (for example, image.iso.xz) without full unpacking of xz archive.
• 7-Zip now can create zip archives from stdin to stdout.
• 7-Zip command line: @ListFile now doesn't work after -- switch.
  Use -i@listfile before -- switch instead.
• The BUGs were fixed:
  7-Zip could add unrequired alternate file streams to WIM archives,
  for commands that contain filename wildcards and -sns switch.
  7-Zip 17.00 beta crashed for commands that write anti-item to 7z archive.
  7-Zip 17.00 beta ignored "Use large memory pages" option.