FIX wrong usage and occurrence of string tag#14043

Merged

qinhanmin2014 merged 4 commits intoscikit-learn:masterfrom

glemaitre:is/string_tag

Jun 13, 2019

Commits on Jun 7, 2019

FIX wrong usage and occurrence of string tag
glemaitre
committed

Commits on Jun 12, 2019

Commits on Jun 13, 2019

fix
glemaitre
committed