Feature Request: ability to view compressed files

[juchem]

Say there is book.pdf.bz2, it would be quite handy to be able to view book.pdf without having to decompress it beforehand.

Common compression formats like gz, bz2 and xz could be a nice initial target.

I'd intentionally stay away from archives of multiple files like zip, 7z or tar (unless, perhaps, they only contain a single supported file inside) and intentionally not support multiple layers of compression (e.g.: book.pdf.gz.gz would not be supported) for security reasons.