add NEWS.md entry for enumerate extension and indexing traits rename#21997

Merged

tkelman merged 1 commit intoJuliaLang:masterfrom Sacha0:news16378

May 24, 2017

+11

Commits on May 20, 2017

Add NEWS.md entry for enumerate(::IndexStyle, itr) addition and indexing traits rename (JuliaLang#16378 ).
Sacha0
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