Use twine to upload to pypi

Author: JelteF

release.sh

@@ -80,4 +80,6 @@ cd ../..
 
 git push
 git push --tags
-python setup.py sdist upload
+rm -rf dist
+python setup.py sdist
+twine upload dist/*

setup.py

@@ -35,6 +35,7 @@
                 'pydocstyle==3.0.0', 'pyflakes==1.2.3', 'pytest>=4.6',
                 'flake8-putty',
                 'coverage', 'pytest-cov'],
+    'packaging': ['twine'],
     'convert_to_py2': ['3to2', 'future>=0.15.2'],
 }