Allow passing args to git-blame
Allow passing args to git-blame

This can be used to pass options like -C or -M.

nvie/GitPython,breavo/GitPython,expobrain/GitPython,jeblair/GitPython,jeblair/GitPython,gitpython-developers/gitpython,breavo/GitPython,nvie/GitPython,gitpython-developers/GitPython,gitpython-developers/GitPython,expobrain/GitPython,gitpython-developers/gitpython