There are many ways to execute the calculang compiler.
Here we have .cul.js model code in ./src and a build script in package.json which is queued to run on any commits to the repository.
So change the .cul.js code, and the compiler will update the compilations (currently also in ./src)
When I create a script to run models, we can track results in similar way.
This gives us a nice, controlled enviornment, without reinventing the wheel, using existing proven/best-practice tooling.
TODO: tidy this up (better commit messages), setup run scripts, and move to calculang org (and restart using main branch)