Randomize Stream::merge to improve the throughput.#503

Merged

k-nasa merged 6 commits intoasync-rs:masterfrom

Razican:random_merge

Nov 19, 2019

Commits on Nov 18, 2019

Fixed deduplication of code
Razican
committed

Commits on Nov 19, 2019

Improved the code with some minor changes
Razican
committed