Log Message:
mkvtoolnix: updated to 26.0.0

Version 26.0.0 "In The Game":

New features and enhancements
* mkvmerge: chapter generation: if the name template given by
  --generate-chapters-name-template is empty, no names (ChapterDisplay
  master elements with ChapterString/ChapterLanguage children) will be
  generated for the chapter atoms.
* mkvmerge: chapters: chapter names generated from MPLS files will now use the
  name template if one is set via --generate-chapters-name-template.
* mkvmerge: mkvmerge will no longer abort with an error message if no audio,
  video and subtitle tracks should be multiplexed. This allows copying of
  chapters from non-chapter source files (e.g. Matroska or MP4 files).
* MKVToolNix GUI: the font size in the tool selector on the left will scale
  with the font size the user selects in the preferences.
* MKVToolNix GUI: the GUI will no longer automatically resize the columns in
  tree and list views to match the content size. Instead it remembers and
  restores the widths set by the user.
* MKVToolNix GUI: multiplexer: the chapter name template will now be set
  automatically to the name template in the preferences' "chapter editor"
  section. Additionally the option --generate-chapters-name-template … will
  be passed to mkvmerge in situations when mkvmerge will generate chapters
  (either because automatic generation is enabled or if chapters are generated
  for MPLS playlists).
* MKVToolNix GUI: chapter editor: if the chapter name template is empty,
  chapters will be generated without names.
* MKVToolNix GUI: chapter editor: added an option to remove all chapter names
  to the "additional modifications" dialog.

Bug fixes
* mkvmerge: Matroska reader: fixed wrong timestamps when appending Matroska
  files where the second Matroska file's first timestamp is bigger
  than 0.
* mkvmerge: MP4 reader: fixed division by zero errors during file
  identification if the timescale is 0 in the MVHD atom.
* mkvmerge: Windows Television DVR files are now recognized as an unsupported
  file type. This prevents mis-detection as MPEG-2 with an accompanying flood
  of error messages.
* MKVToolNix GUI: info tool: under certain circumstances "cues" were \ 
shown at
  the wrong level (inside the previous master element instead of on level 1).
* MKVToolNix GUI: job queue: fixed invalid memory handling and consequent
  crashes when using the "edit in corresponding tool & remove from job \ 
queue"
  option if one of the files in that job contained attached files.

Build system changes
* An AppStream metadata file will be installed in $prefix/share/metainfo.