Not in the repo itself. But if you create a Project, and add the issues/PRs from the repo to that project, you can generate a burndown chart.

For a second I thought you said that the sheep are predators of the solar panels

Yeah, did you not watch the documentary?

I work at an insurance company, and our core business system is written in RPG. We are starting the process of splitting it up and modernizing it, but I suspect there will still be some RPG code running in production in ten years.