fix package setup

setup.py

@@ -8,4 +8,13 @@ setup(name='situr',
       author_email='hannes@kuchelmeister.org',
       license='MIT',
       packages=find_namespace_packages(include=['situr.*']),
+      install_requires=[
+          'numpy>=1.21.0',
+          'open3d>=0.13.0',
+          'Pillow>=8.3.1',
+          'probreg>=0.3.4',
+          'scikit-image>=0.18.2',
+          'scikit-learn>=0.24.2',
+          'scipy>=1.7.0'
+      ],
       zip_safe=False)