Feature request: multi-lingual (unlimited languages, not limited to only two)

[MegaLoler]

• I'd love to be able to provide three or more input subtitles each in a different language.
• I'd also love to have a "language agnostic" mode where no one language is designated as the "native" language and that no one language is designated as the "foreign" language. No language is given priority over another one in any way other than the order they are specified (formatting, etc.).
• And I'd like to be able to optionally pair a media file with each of the input subtitles. (Meaning the possibility of not using a media file at all, only pairing the texts without audio at all, and also the possibility of using a media file for each language, so that audio can be listened to in any of the languages.)

I would like to use this in order to output an HTML file with a table of three or more columns of languages with media for each cell (all columns/languages, and all rows/segments). As a reference, this is what I'm after: http://emichaelsphoto.com/~aardbei/content/parallelponies/ (clicking and holding on a cell plays the associated media.)

Another simple usage scenario for being able to provide more than two subtitle files is being able to provide Japanese, hiragana, and English in order to have all three interlaced in the current format of the export review command.

[emk]

This is a neat idea! I don't plan to support it directly, but changes to substudy's native file formats may make this pretty easy to do from a script in the future.