Log Message:
mkvtoolnix: updated to 22.0.0

Version 22.0.0 "At The End Of The World"

New features and enhancements
* mkvmerge, MKVToolNix GUI multiplexer: AC-3, DTS, TrueHD: added an option for
  removing/minimizing the dialog normalization gain for all supported types of
  the mentioned codecs.
* mkvmerge: AV1: added support for reading AV1 video from IVF, WebM and
  Matroska files.
* mkvmerge: FLAC: mkvmerge can now ignore ID3 tags in FLAC files which would
  otherwise prevent mkvmerge from detecting the file type.
* mkvinfo: the size and positions of frames within "SimpleBlock" and
  "BlockGroup" elements are now shown the same way they're shown for other
  elements (by adding the `-v -v` and `-z` options).
* MKVToolNix GUI: multiplexer: added options for deriving the track languages
  from the file name by searching for ISO 639-1/639-2 language codes or
  language names enclosed in non-word, non-space characters (e.g. \ 
"…[ger]…"
  for German or "…+en+…" for English).
* MKVToolNix GUI: info tool: implemented reading all elements in the file
  after the first cluster. Only top-level elements are shown; child elements
  are only loaded on demand.
* MKVToolNix GUI: info tool: added a context menu with the option to show a
  hex dump of the element with the bytes making up the EBML ID and the size
  portion highlighted in different colors. In-depth highlighting is done for
  the data in `SimpleBlock` and `Block` elements.
* MKVToolNix GUI: chapter editor: added an option to remove all end timestamps
  to the "additional modifications" dialog.

Bug fixes
* mkvmerge: MP4 reader: fixed reading the ESDS audio header atom if it is
  located inside a "wave" atom inside the "stsd" atom.
* mkvmerge: MP4 reader: AAC audio tracks signalling eight channels in the
  track headers but only seven in the codec-specific configuration will be
  treated as having eight channels.
* mkvmerge: MPEG TS reader: fixed wrong handling of the continuity counter for
  TS packets that signal that TS payload is present but where the adaptation
  field spans the whole TS packet.
* mkvmerge: the 'document type version' and 'document type read version'
  header fields are now set depending on which elements are actually written,
  not on which features are active (e.g. if a `SimpleBlock` is never written,
  then the 'read version' won't be set to 2 anymore).
* mkvmerge: the 'document type version' header field is now set to 4 correctly
  if any of the version 4 Matroska elements is written.
* mkvinfo: summary mode: the file positions reported for frames in
  `BlockGroup` elements did not take the bytes used for information such as
  timestamp, track number flags or lace sizes into account. They were
  therefore too low.
* mkvpropedit, MKVToolNix GUI header editor: the 'document type version' and
  'document type read version' header fields are now updated if elements
  written by the changes require higher version numbers.
* mkvpropedit, MKVToolNix GUI header editor: mandatory elements can now be
  deleted if there's a default value for them in the specifications.
* source code: fixed a compilation error on FreeBSD with clang++ 5.0.

Build system changes
* A compilation database (in the form of a file `compile_commands.json`) can
  be built automatically if the variable `BUILD_COMPILATION_DATABASE` is set
  to `yes` (e.g. as `rake BUILD_COMPILATION_DATABASE=yes`).