Origin for each line in .github/mergeable.yml from check-in 5ce5316a33:

5ce5316a33 2021-03-01 jeff@gridfini: version: 2
5ce5316a33 2021-03-01 jeff@gridfini: mergeable:
5ce5316a33 2021-03-01 jeff@gridfini:   - when: pull_request.opened
5ce5316a33 2021-03-01 jeff@gridfini:     name: "Greet a contributor"
5ce5316a33 2021-03-01 jeff@gridfini:     validate: []
5ce5316a33 2021-03-01 jeff@gridfini:     pass:
5ce5316a33 2021-03-01 jeff@gridfini:       - do: comment
5ce5316a33 2021-03-01 jeff@gridfini:         payload:
5ce5316a33 2021-03-01 jeff@gridfini:           body: >
5ce5316a33 2021-03-01 jeff@gridfini:             Thanks for your contribution!  Unfortunately, we don't use GitHub pull requests to manage code contributions to this repository.  Instead, please contact the author via [DL2MIE](https://dl2mie.darc.de/).
5ce5316a33 2021-03-01 jeff@gridfini:       - do: close