Update detection without pre-commit

[matze]

Detecting the change of spec text is nice and obviously super important but having it as a pre-commit step is a bit annoying for larger projects with many people involved. In that case detection via CI would be a great alternative however that somehow requires that changes happened across commits. I only see two ways to achieve that: give tracey the ability to check Git diffs or somehow™ lock requirement info in a separate file. Neither is great but I'd say the latter is more convenient.

What do you think?

[fasterthanlime]

give tracey the ability to check Git diffs or somehow™ lock requirement info in a separate file.

Honestly both feasible — and both would probably solve the problem of "does this PR also bump requirements versions when it changes requirement text" — which means tracey would need to know the base branch a PR is being merged into.