WIP: Rename caosdb -> linkahead

README_SETUP.md

@@ -68,3 +68,9 @@ Build documentation in `build/` with `make doc`.
 - [Google Style Python Docstrings](https://sphinxcontrib-napoleon.readthedocs.io/en/latest/example_google.html)
 - [Google Style Python Docstrings 2nd reference](https://github.com/google/styleguide/blob/gh-pages/pyguide.md#38-comments-and-docstrings)
 - [References to other documentation](https://www.sphinx-doc.org/en/master/usage/extensions/intersphinx.html#role-external)
+
+## Migration ##
+
+### From xxx to xxx ###
+
+- `.linkaheadignore`