MNT: use find_namespace_packages

setup.py

@@ -4,7 +4,7 @@ import shutil
 import sys
 import os.path as op
 
-from setuptools import setup, find_packages, Command
+from setuptools import setup, find_namespace_packages, Command
 
 basedir = op.dirname(__file__)
 
@@ -97,7 +97,7 @@ setup(
 
     install_requires=install_requires,
     extras_require=extras_require,
-    packages=find_packages(),
+    packages=find_namespace_packages(include=('funpack', 'funpack.*')),
     include_package_data=True,
 
     cmdclass={'doc' : doc},