Updated version.py template to include __all__

Author: jamesbraza

src/setuptools_scm/_integration/dump_version.py

@@ -15,9 +15,13 @@
     ".py": """\
 # file generated by setuptools-scm
 # don't change, don't track in version control
+
+__all__ = ["__version__", "__version_tuple__", "version", "version_tuple"]
+
 TYPE_CHECKING = False
 if TYPE_CHECKING:
     from typing import Tuple, Union
+
     VERSION_TUPLE = Tuple[Union[int, str], ...]
 else:
     VERSION_TUPLE = object