Evaluate Pex for distribution of smartcontainers

[charlesvardeman]

For easier integration into boatload, pex self-executable python environments might be useful. The entire package can be scp'd to a container instead of requiring a full python environment inside the container. Pex documentation is at:
https://pex.readthedocs.org/en/stable/whatispex.html

There may be a tool to integrate with the tox system that will automatically generate a pex distribution.