display published version for list command

[sehz]

This is great utility.

It would be handy if list command display last published version of crates as well. So something like this:

$ cargo ws list -l
crates        current_version         published_version
-------      ----------------        -----------------
echo          0.2.0                          0.1.2

[pksunkara]

Unfortunately, I am considering this as out of scope for this tool. There are other tools out there that gets you the info of current published versions.