Improve pinhole, io, and augment db.

[benjaminrwilson]

PR Summary

Testing

In order to ensure this PR works as intended, it is:

• [ ] unit tested.
• [x] other or not applicable (additional detail/rationale required)

Compliance with Standards

As the author, I certify that this PR conforms to the following standards:

• [x] Code changes conform to PEP8 and docstrings conform to the Google Python style guide.
• [x] A well-written summary explains what was done and why it was done.
• [x] The PR is adequately tested and the testing details and links to external results are included.