Some entities might not be lowercase

[hedgieinsocks]

The keys in entities dictionary are not guaranteed to be lowercase. See an example for criptea.com domain name.

{'copyright_notice': '',
 'description': [],
 'dnssec': False,
 'entities': {'Registrar': [{'name': 'Platinum Registrar, Inc.',
                             'type': 'entity',
                             'url': 'www.platinumregistrar.com'}],

Perhaps, we should force lowercase keys ourselves?