Remove vendored versioneer

.gitattributes

-pystencils/_version.py export-subst
+src/pystencils/_version.py export-subst

pyproject.toml

@@ -71,8 +71,7 @@ tests = [
 [build-system]
 requires = [
     "setuptools>=61",
-    "versioneer>=0.29",
-    "tomli; python_version < '3.11'",
+    "versioneer[toml]>=0.29",
     # 'Cython'
 ]
 build-backend = "setuptools.build_meta"

src/pystencils/__init__.py

@@ -77,7 +77,5 @@ __all__ = [
     "stencil",
 ]
 
-from ._version import get_versions
-
-__version__ = get_versions()["version"]
-del get_versions
+from . import _version
+__version__ = _version.get_versions()['version']