Compositions' object has no attribute 'elemental_info'

[antonf-ekb]

Dear developers!
Trying to run this notebook, I face errors:
Executing this
from xenonpy.datatools import preset
samples = preset.mp_samples
gives
... AttributeError: 'Preset' object has no attribute 'mp_samples'

and executing this
from xenonpy.descriptor import Compositions
cal = Compositions()
cal
gives
AttributeError: 'Compositions' object has no attribute 'elemental_info'