Don't install test files
https://bugs.gentoo.org/886031
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,7 @@ setuptools.setup(
     include_package_data=True,
     exclude_package_data={"": ["development", "development.*"], "development": ["*"]},
     packages=setuptools.find_namespace_packages(
-        exclude=["development", "development.*"]
+        exclude=["development", "development.*", "test", "test.*"]
     ),
     entry_points={
         "console_scripts": [