Automate build of project to pypi with google cloud build #5

As a developer i do not want to constantly have to:

• Edit setup.py's version
• rm -r dist/*
• twine upload

I want to push code and have cloud build do the packaging (and testing, but hey, we need tests) for me.
Goal:
Setup Cloud Build to bump the version in setup.py and twine upload to pypi. Bonus points for updating the release section.