Stabilize Iterator::flatten in 1.29, fixes #48213.#51511

Merged

bors merged 1 commit intorust-lang:masterfrom Centril:feature/stabilize_iterator_flatten

Jul 1, 2018

+7-15

Commits on Jun 11, 2018

stabilize Iterator::flatten in 1.29, fixes rust-lang#48115 .
Centril
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