Cargo crate name fuzzy autocomplete?

[ColinLeftwich]

A really nice feature would be the ability to have some sort of tab autocomplete for adding new dependencies to a project. The biggest issues is how you could get that list. I don't think it would be responsible for it to constantly ping crates.io api. You could have it download the list of crate names from the zip file they publish daily. Of course that brings up the question of what if the list is out of date.