Use twin for distribution

setup.py

@@ -54,8 +54,8 @@ if sys.argv[-1] == 'publish':
     except ImportError:
         print('Wheel library missing. Please run "pip install wheel"')
         sys.exit()
-    os.system('python setup.py sdist upload')
-    os.system('python setup.py bdist_wheel upload')
+    os.system('python setup.py sdist bdist_wheel')
+    os.system('python3 -m twine upload --repository-url https://test.pypi.org/legacy/ dist/*')
     sys.exit()
 
 if sys.argv[-1] == 'tag':