Feature request: custom HTML template for export review

[MegaLoler]

I'd like to be able to provide my own HTML template for the output of the export review command.

My personal interest in this is that I'd like to be able to use my own audio player to play the files rather than the built in audio element (for better sound playback control) and also potentially having a side-by-side layout rather than an interlinear one.

[emk]

I'm working on a new output format based on JSON. See aligned_media for the code, and https://github.com/language-learners/aligned-media-spec for the spec. I would propose that you take this format as input and use it as input to a templating tool of your own.