Integrate with Twine for increased PyPI account security

[justinmayer]

Why it would benefit Bumpr:

The biggest reason to use twine is that python setup.py upload uploads files over plaintext. This means anytime you use it you expose your username and password to a MITM attack. Twine uses only verified TLS to upload to PyPI protecting your credentials from theft.

Secondly it allows you to precreate your distribution files. python setup.py upload only allows you to upload something that you've created in the same command invocation. This means that you cannot test the exact file you're going to upload to PyPI to ensure that it works before uploading it.

Finally it allows you to pre-sign your files and pass the .asc files into the command line invocation (twine upload twine-1.0.1.tar.gz twine-1.0.1.tar.gz.asc). This enables you to be assured that you're typing your gpg passphrase into gpg itself and not anything else since you will be the one directly executing gpg --detach-sign -a <filename>.

Link:

https://pypi.python.org/pypi/twine/

[noirbizarre]

I will look into that.

I'm doing a little bit of refactoring on bumpr (it was a first release) and will include it if possible.