Log Message:
mkvtoolnix: updated to 89.0

Version 89.0 "And the Melody Still Lingers On (Night in Tunisia)" \ 
2024-12-27

New features and enhancements

* mkvmerge: AC-3 writer: mkvmerge will now use the codec ID `A_AC3` even for
  streams with bitstream IDs 9 or 10 instead of the deprecated codec IDs
  `A_AC3/BSID9` & `A_AC3/BSID10`.
* MKVToolNix GUI: multiplexer: the mechanism for setting track languages to
  specific values upon adding a file has gotten a new option to always set the
  language, no matter whether or not the source container provided a track
  language or what it was set to.
* all command-line tools: implemented an escape mechanism for when you want to
  use the `@` sign as the first character in an argument to an option such as
  `--title`. To escape it the `@` sign has to be doubled as in `--title
  @@midnight`.

Bug fixes

* mkvmerge, mkvpropedit, MKVToolNix GUI's multiplexer & header editor: the
  MIME type for TrueType & OpenType fonts will be set properly to either the
  current MIME types `font/ttf` & `font/otf` or to the legacy MIME types
  `application/x-truetype-font` & `application/vnd.ms-opentype` depending on
  whether the "use legacy font MIME types" option is disabled or \ 
enabled, even
  if the MIME database used by Qt returns the wrong one or even other MIME
  types such as `application/x-font-ttf` & `application/x-font-otf`. This was
  the case on Windows due to Qt 6.7.3 switching to a different embedded MIME
  database.
* MKVToolNix GUI's multiplexer & header editor: ensured that both the legacy \ 
&
  the current font MIME types are always present in the MIME type combo boxes
  of attachments, no matter what Qt's MIME type database contains.
* MKVToolNix GUI: the "disable tooltips" option in the preference will now
  disable the tooltip for the status bar, too.