[opus] Command line utility for tagging Opus files

[Chris Cantwell]

I would like to be able to add/modify tags (like artist, album, title) 
to opus files. The opusenc utility does a fine job of creating tags when 
creating opus files, but I would like to be able to modify existing opus 
files from the command line. vorbiscomment can add tags to existing ogg 
files, but it doesn't work with opus files.

Does anyone have a solution for this?
Thanks,
Chris