[MRG] Convert ColumnTransformer input list to numpy array#12104

Merged

amueller merged 6 commits intoscikit-learn:masterfrom

vinayak-mehta:column-transformer-list

Sep 25, 2018

Commits on Sep 18, 2018

Commits on Sep 23, 2018

Commits on Sep 24, 2018

Make CT accept list of mixed typed objects including nans without conversions
ogrisel
committed

Commits on Sep 25, 2018

undo warn_on_dtype change + catch warning in test
jorisvandenbossche
committed