Include Git information in the document as watermark or via variables
Description
If your LaTeX-document is version-controlled with git, you
might encounter situations, where you want to include some
information of your git-repository into your LaTeX-document-
e.g. to keep track on who gave you feedback on which version of
your document. This git-information can be included on every
page by a watermark or (for custom needs) via provided
variables.
