MKVToolNix 62.0.0 Final + Portable (MKV µ¿¿µ»ó »ý¼º/ÆíÁý/ÃßÃâ/ÇÕÄ¡±â)

# Version 62.0.0 "Apollo" 2021-10-10

## New features and enhancements

* all: IETF BCP 47/TFC 5646 language tags: all ISO 639 languages are now

available, even the ones that aren't of types "Constructed", "Living" or

"Special".

* mkvmerge, mkvpropedit: chapters: both programs will now write elements set

to their default value, too (e.g. the legacy language element if it's set to

`eng`). This is done to be more consistent with how MKVToolNix GUI writes

chapters. Implements #3210.

* MKVToolNix GUI: multiplexer: when adding new files as attachments the GUI

checks if there are other attachments with the same name. If so, the GUI

would ask whether to skip the affected files or add them anyway. There's now

an option in the preferences to always skip such files, and it's enabled by

default. Implements #3213