XmlModelMeta accepts ModelMetaclass directly.

[dapper91]

Accepting metaclass base as type(BaseModel) could lead to some problems with linters and code analyzers.
For example mypy can't figure out that type(BaseModel) returns ModelMetaclass and thinks that BaseModel and BaseXmlModel have different metaclass roots.

XmlModelMeta is not inherited from ModelMetaclass directly because it is not public. The issue addressing that problem.

Resolves the issue

[codecov-commenter]

Codecov Report

Merging #90 (ebca1e1) into dev (a6d40e6) will decrease coverage by 0.90%.
Report is 39 commits behind head on dev.
The diff coverage is 93.46%.

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@@            Coverage Diff             @@
##              dev      #90      +/-   ##
==========================================
- Coverage   93.11%   92.22%   -0.90%     
==========================================
  Files          23       23              
  Lines        1089     1234     +145     
==========================================
+ Hits         1014     1138     +124     
- Misses         75       96      +21     

Flag	Coverage Δ
unittests	92.22% <93.46%> (-0.90%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
pydantic_xml/element/native/lxml.py	0.00% <ø> (ø)
...ydantic_xml/serializers/factories/typed_mapping.py	73.91% <73.91%> (ø)
pydantic_xml/serializers/factories/tagged_union.py	84.84% <84.84%> (ø)
pydantic_xml/serializers/factories/union.py	87.95% <87.17%> (+0.14%)	⬆️
pydantic_xml/serializers/factories/mapping.py	88.75% <89.33%> (-1.88%)	⬇️
...ydantic_xml/serializers/factories/heterogeneous.py	89.58% <90.90%> (-1.49%)	⬇️
pydantic_xml/serializers/factories/homogeneous.py	92.00% <91.66%> (+0.62%)	⬆️
pydantic_xml/serializers/factories/primitive.py	95.69% <95.45%> (+1.66%)	⬆️
pydantic_xml/serializers/factories/model.py	95.62% <96.04%> (+0.34%)	⬆️
pydantic_xml/element/element.py	99.42% <96.55%> (+0.03%)	⬆️
... and 8 more