Publish to PyPI

[felddy]

🚀 Feature Proposal

Publish the library to PyPI, and modernize build process.
See: https://github.com/cisagov/travis-wait-improved

Motivation

It'll make life easier for users.

Example

See: cisagov/con-pca-cicd#52

Pitch

I thought I did this already. Do it!