BUG: bug in non-evently divisible offsets when resampling (e.g. '7s') (GH8371)
non-existent columns in DataFrame.dropna subset argument now raises KeyError
EHN: Allow DataFrame.fillna to accept a DataFrame as its fill value.
Merge pull request #8384 from mcjcode/master

non-existent columns in DataFrame.dropna subset argument now raises KeyError
FIX: categorical fixups
Merge pull request #8388 from unutbu/fillna-df

EHN: Allow DataFrame.fillna to accept a DataFrame as its fill value.
Merge pull request #8372 from jreback/resample

BUG: bug in non-evently divisible offsets when resampling (e.g. '7s') (GH8371)