Stabilize step_by by adding it to Iterator (issue #27741)#41439
Merged
bors merged 3 commits intorust-lang:masterfrom May 19, 2017 
Merged
Stabilize step_by by adding it to Iterator (issue #27741)#41439bors merged 3 commits intorust-lang:masterfrom 
bors merged 3 commits intorust-lang:masterfrom