Automated Test Workflows and Dependabot

[ff137]

Re: #275

I notice we're missing automated tests in this repo. Maybe there's a reason for that, but maintainability goes up 100 fold when tests can be run on command, and if Dependabot can automatically update dependencies.

Could we add some test workflows (and Dependabot workflow) to streamline updates and catch issues early? Happy to assist in setup if guidance on testable functions or scripts is provided.

[WadeBarnes]

Info regarding functionality that could use tests, #275 (comment)

Comments on project structure here, #275 (comment)