support for .info #978
Description
I think this should be doable lazily (maybe forget the nan count), just some summarizing data
DataFrame.info
<class 'pandas.core.frame.DataFrame'>
Int64Index: 4026195 entries, 0 to 567
Data columns (total 3 columns):
Date datetime64[ns]
Close float64
stock object
dtypes: datetime64[ns](1), float64(1), object(1)
memory usage: 122.9+ MB
for sure you know dtypes & lengths of the chunks.