Merge imports from the same module

[tomwhoiscontrary]

I would like two imports from the same module:

use std::time::Duration;
use std::time::Instant;

To become a single import list:

use std::time::{Duration, Instant};

Relatedly, i'd like this a duplicate import:

use std::time::Duration;
use std::time::Duration;

To become single:

use std::time::Duration;

!

And finally, it would be nice if there was an option to have turn an import of a module and some things from inside it:

use std::thread;
use std::thread::{Builder, JoinHandle};

Into a single import list using self for the module:

use std::thread::{self, Builder, JoinHandle};

[sergeysova]

Any progress here?