If we are to cite this repo in the paper and keep stuff here for the posterity, we have to clean up the repository the remove stuff that don't belong here: correspondence, etc.
we should also include a README.md describing the contents.
I agree, partially. Keeping the correspondence open is a good way of doing open science. I will, however write an informative README. You may want to rename the repo to have a more informative name
If we are to cite this repo in the paper and keep stuff here for the posterity, we have to clean up the repository the remove stuff that don't belong here: correspondence, etc.
we should also include a README.md describing the contents.