Comments and quoting are lost when running on dune-project

[Lupus]

When running opam-dune-lint on a dune-project and confirming updates, the comments that were originally in dune-project file will be removed. Also some (unnecessary) quotations of atoms gets removed, which creates a noise in diff which I have to clean up manually each time. Would be awesome if the tool preserved original content of the file as much as possible, retaining comments and quotations.