Loop over (&EXPR).into_iter()

[dtolnay]

- for x in &self.y {
+ for x in (&self.y).into_iter() {

I think this fixes both #6 and #7.

[djc]

Woo, very nice! I had tried some things to figure out to get the inferencing to accept more stuff, but that was kind of a minefield.

[dtolnay]

Please add tests for #6 and #7.

[djc]

Kept them open for a reason. :)