Properties whose value evaluates to False (e.g., zero) are not serialized if using include_empty_properties=False

[apdavison]

Example:

In [1]: import openminds.v4 as om
In [2]: obj = om.publications.LivePaperSection(name="test", order=0)
In [3]: obj.to_jsonld()
Out[3]:
{'@context': {'@vocab': 'https://openminds.om-i.org/props/'},
 '@type': 'https://openminds.om-i.org/types/LivePaperSection',
 'description': None,
 'isPartOf': None,
 'name': 'test',
 'order': 0,
 'type': None}
In [4]: obj.to_jsonld(include_empty_properties=False)
Out[4]:
{'@context': {'@vocab': 'https://openminds.om-i.org/props/'},
 '@type': 'https://openminds.om-i.org/types/LivePaperSection',
 'name': 'test'}