Datetime column conversion [to_datetime] support

[Tonyloyt]

I tried to convert date column to timeseries with to_datetime function but facing issue df['date'] = vaex.to_datetime(df['date'],format='%Y-%m-%d')

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
/tmp/ipykernel_6013/2521434759.py in <module>
---->  df['date'] = vaex.to_datetime(df['date'],format='%Y-%m-%d')

AttributeError: module 'vaex' has no attribute 'to_datetime'

Any recommendation on how to work with timeseries column with vaex?

[solwarsop]

See #1011