previously every operation that would try to create owner history would fail with the error below if there wasn't IfcPersonAndOrganisation in the project.
On older numpy versions, np.ndarray was less forgiving and wasn't allowing passing 1 argument instead of required 2.
And turned out numpy doesn't yet have typing for shapes (https://github.com/numpy/numpy/issues/16544), so all matrices and other shapes specified as `npt.NDArray[np.float64]`.
Fixed type discrepancies for `get_edges` and `get_faces` and also had to fix `import_ifc` as Blender apparently has problems with storing np.int32 in custom attributes (https://projects.blender.org/blender/blender/issues/121072), tested that Blender is okay with np.int32 in other cases we had (addressing BMesh.verts[i] where `i` is np.int32).
Example:
```
import ifcopenshell
ifc_file = ifcopenshell.file(schema="IFC2X3")
# ifc_file.begin_transaction()
wall = ifc_file.createIfcWall()
wall.Identification = "25"
# Before:
# Traceback (most recent call last):
# File "test.py", line 4, in <module>
# wall.Identification = "25"
# ^^^^^^^^^^^^^^^^^^^
# File "\ifcopenshell\entity_instance.py", line 279, in __setattr__
# self[index] = value
# ~~~~^^^^^^^
# File "\ifcopenshell\entity_instance.py", line 293, in __setitem__
# method = self.method_list[idx]
# ~~~~~~~~~~~~~~~~^^^^^
# IndexError: list index out of range
# or this (if file had a transaction going)
# File "\ifcopenshell\entity_instance.py", line 279, in __setattr__
# self[index] = value
# ~~~~^^^^^^^
# File "\ifcopenshell\entity_instance.py", line 288, in __setitem__
# self.wrapped_data.file.transaction.store_edit(self, idx, value)
# File "\ifcopenshell\file.py", line 101, in store_edit
# "old": self.serialise_value(element, element[index]),
# ~~~~~~~^^^^^^^
# File "\ifcopenshell\entity_instance.py", line 283, in __getitem__
# raise IndexError("Attribute index {} out of range for instance of type {}".format(key, self.is_a()))
# IndexError: Attribute index 4294967295 out of range for instance of type IfcWall
# After:
# Traceback (most recent call last):
# File "test.py", line 4, in <module>
# wall.Identification = "25"
# ^^^^^^^^^^^^^^^^^^^
# File "ifcopenshell\entity_instance.py", line 283, in __setattr__
# raise AttributeError(
# AttributeError: entity instance of type 'IFC2X3.IfcWall' has no attribute 'Identification'
```
ifcpatch ConvertLengthUnit - change used units from plural to singular names, to make it consistent across the api
more test coverage - test converting to more units and back from them
Andrej730
