emoji inside of files breaks the resulting tar.

Test case: put a single emoji in a plain text file, try to tar it. The resulting file will have written to it all files that it read before the emoji file, but stops writing afterwards.

I assume this is a more generic problem with alternate encodings, but the problem that my team just had was specific to emoji.

edit: also, not sure if this issue would be better opened in tar-stream, or one of this libraries' dependencies, let me know!