#172 Correction of unit tests
#172 Moving the Git integration tests
#172 Git test for clone & fetch
#172 Using a (small) DSL for testing the repositories
#172 Test for the scanning of commits on a branch
#172 Test for tag containing a commit
#172 Change log diff
#172 Git service: scan commits
#172 Git service: lookup commit
#172 Git service: remote branches
#172 Git service: commit info
#172 Git service: list of tags
#172 Git service: dependency cleanup
#172 Git configuration: correction of IT
#172 Git client removal
#172 GitRepo made accessible
#172 Deleting `FormerGitConfiguration`
#172 Simplifying credentials
#172 Refactoring of the `SCMChangeLog`