Log Message:
mkvtoolnix: updated to 71.1.0

Version 71.1.0 "Fortitude" 2022-10-09

Bug fixes

* Chapters DTD: added the new edition & chapter elements from Matroska v5.
* Chapters DTD: fixed EditionUID being mandatory. mkvmerge can auto-generate
  it if it's missing from the XML file.
* Chapters DTD: fixed the `example-chapters-1.xml` not validating against the
  DTD.
* Chapters DTD: corrected the old name `EditionManaged` to
  `EditionFlagOrdered`.
* Chapters DTD: fixed `ChapLanguageIETF` missing its element declaration &
  `ChapterLanguage` being required.
* XML DTDs: fixed elements representing binary data not allowing the `format`
  attribute.

Build system changes

* bug fix: configure accidentally tested for libEBML ≥ 2.0.0 & libMatroska ≥
  2.0.0, even though the actual requirements are 1.4.4 & 1.7.1 respectively.

Version 71.0.0 "Altitude" 2022-10-08

New features and enhancements

* mkvmerge, MKVToolNix GUI's multiplexer: added support for the Emphasis audio
  track header element via the `--audio-emphasis` option. It is also read from
  Matroska files.
* mkvmerge: the options `--list-stereo-modes` and `--list-audio-emphasis` have
  been added to list all support numerical & textual values for the
  `--stereo-mode` & `--audio-emphasis` options.
* mkvpropedit, MKVToolNix GUI's header editor: added support for the Emphasis
  audio track header element via the `emphasis` property.
* MKVToolNix GUI: multiplexer: when the track properties are
  configured to be displayed in a tab widget below the files & tracks
  in the "Input" tab, the "Color information" tab will be \ 
laid out in
  two columns. This reduces the minimum height the whole tab widget
  requires.
* MKVToolNix GUI: greatly sped up closing the preferences dialog by only
  re-running certain initialization functions when their corresponding
  settings have changed.
* mkvinfo, MKVToolNix GUI's info tool: added support for the following new
  elements from Matroska v5: Emphasis audio track header element; Chapter Skip
  Type; Edition Display; Edition String; Edition Language IETF.
* mkvmerge, mkvpropedit: added support for the following new chapter elements
  from Matroska v5: Chapter Skip Type; Edition Display; Edition String;
  Edition Language IETF. The GUI's chapter editor will receive support for
  them in the next release.

Bug fixes

* mkvmerge: Ogg/OGM reader: mkvmerge will now correctly skip tracks of
  unsupported types as well as tracks for which all track header pages
  haven't been found.

Build system changes

* libEBML 1.4.4 & libMatroska 1.7.1 are now required.
* The bundled libEBML & libMatroska libraries were updated to v1.4.4 & v1.7.1
  respectively.
* The bundled `fmt` library was updated to v9.1.0.
* The bundled `nlohmann-json` library was updated to v3.11.2.