* Change audio codec options for clarity.

Major rewrite of the code.

Removing:
* Locale support.
* Auto cropping.
* Remove original files.
* Include external subtitles.
* Manual handle of languages.

Including:
* Transcode or copy all audio streams, preserving language.
* Copy all internal subtitles, preserving language.
* Encode to 10 bits video, to preserve HDR, and improve SDR output.

v3.2.7

* Manage unknown/undetermined languages of input subtitles.

v3.2.6

* Add a workaround to fix the ffmpeg's bug: "Too many packets buffered for output stream"

v3.2.5

* Improve the management of temporary files and the final cleaning process.
* Fix issues in the final report output.

v3.2.2

* Improve the cleaning of temporary files.

v3.2.1

* Improve input file checking.

v3.2.0

* Avoid overwriting file(s) with the output file(s).

v3.1.1

* Fix Spanish translation issues.

v3.1.0

* Fix internationalization issues.
* Improve help messages.
* Check for the validity of user introduced preset values.