git-subtree-dir: db-update-mockup
git-subtree-mainline: cdb482b3
git-subtree-split: 1487bcc3

README.rst: Adding examples for per-package plaintext files based tracking of versions and per-repo plaintext files based tracking of package versions (both don't hold any further packge information but name and version).

README.rst: Adding first draft of writeup and documentation of repository layouts, workflows and TODOs.