Can u support 7z / lzma2?

[pablorosatti]

[workhorsy]

I don't have the time to figure out how to do this. Anyone else want to try adding 7z or lzma?

[btzr-io]

This supports more archive types but not sure how well it handles 7z :
https://github.com/nika-begiashvili/libarchivejs