* mkvmerge: JSON identification: cropping parameters are reported again even if some of the four values are not present in the file or set to 0. * mkvmerge: AV1 packetizer: the packetizer did not honor the aspect ratio (factor) given on the command-line via the `-aspect-ratio` or `-aspect-ratio-factor` options. * mkvmerge: fixed several instances of wrong format strings for `fmt::format` used in debug messages. * MKVToolNix GUI: Windows: a new settings in the preferences lets the user chose whether to use the light or the dark color palette, or to follow the system settings. This allows the use of the 'Open with' context menu action in Finder. * MKVToolNix GUI: macOS: when you install the application from the DMG it'll register itself as an alternate handler for its supported file types. when a track's name is changed) instead of showing what's in the file on disk. * MKVToolNix GUI: header editor: the columns in the tracks/attachments view and the values on the 'track type' page will now be updated each time a corresponding property is changed (e.g. This behavior can be turned off in the preferences. If there's no track with its flag turned on for a type, the GUI will turn on the flag for the first track of the type. * MKVToolNix GUI: multiplexer: the GUI will now check the state of the 'track enabled' flag of all video, audio & subtitle tracks when starting to multiplex or adding a job to the job queue. Only affects new installations, or when the user presses the 'reset to default colors' button. * MKVToolNix GUI: multiplexer: the default list colors used for distinguishing source files does not include the darkest tier anymore (the ones where one or two components are set to the value 0x3f) as they're hard to distinguish from each other. Note that this doesn't affect file identification. Tracks of the same type will be sorted in the same order as their source files occur in the command-line arguments. The order is as follows: video tracks first followed by audio & subtitle tracks with other rarely used types of tracks last. * mkvmerge: tracks in the destination file will now be sorted by their type automatically unless the track order is specified with the `-track-order` option.

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