New version of pysmartdatamodels 0.5.41

There is a new version of the python package for smart data models  pysmartdatamodels 0.5.41

Changelog:

– The README include now the basic documentation of each function

• New function to load in a dictionary all subjects and their data models, with their repository link, and related domains
• New function to load in a dictionary all the attributes in every data model including  name of the property, data type, NGSI type, description, units, et