Computation times

03:36.293 total execution time for 3 files from auto_examples/01_encoding:

Example	Time	Mem (MB)
Various string encoders: a sentiment analysis example (0020_text_with_string_encoders.py)	02:44.607	1307.6
Encoding: from a dataframe to a numerical matrix for machine learning (0010_encodings.py)	00:41.675	610.7
Handling datetime features with the DatetimeEncoder (0030_datetime_encoder.py)	00:10.011	616.6