Merge branch 'feature/git-mailmap-file' into 'master'

[git] add mailmap file

See merge request !1871

.mailmap

+Dennis Gläser <dennis.glaeser@iws.uni-stuttgart.de>
+Dennis Gläser <glaeser@hal.iws.uni-stuttgart.de>
+Christoph Grüninger <foss@grueninger.de>
+Christoph Grüninger <christoph.grueninger@iws.uni-stuttgart.de>
+Christoph Grüninger <gruenich@dune-project.org>
+Andrea Vescovini <vescovini.andrea@gmail.com>
+Andrea Vescovini <andrea.vescovini@mail.polimi.it>
+Kilian Weishaupt <kilian.weishaupt@iws.uni-stuttgart.de>
+Ivan Buntic <st116086@stud.uni-stuttgart.de>
+Ivan Buntic <ivan@ly2.fritz.box>
+Shirin Moradi <s.moradi@fz-juelich.de>
+Shirin Moradi <moradi@darth.iws.uni-stuttgart.de>
+Simon Emmert <simon.emmert@iws.uni-stuttgart.de>
+Simon Emmert <simon.scholz@iws.uni-stuttgart.de>
+Simon Emmert <scholz.simon@web.de>
+Sina Ackermann <Sina.Ackermann@gmx.de>
+Sina Ackermann <sina.ackermann@iws.uni-stuttgart.de>
+Theresa Kurz <tkurz@kiddo.iws.uni-stuttgart.de>
+Theresa Kurz <theresa.kurz@iws.uni-stuttgart.de>
+Beatrix Becker <beatrix.becker@iws.uni-stuttgart.de>
+Farid Mohammadi <farid.mohammadi@iws.uni-stuttgart.de>
+Gabriele Seitz <gabriele.seitz@iws.uni-stuttgart.de>
+vishal jambhekar <vishal.jambhekar@iws.uni-stuttgart.de>
+Leopold Stadler <Leopold.Stadler@baw.de>
+Leopold Stadler <leopold.stadler@baw.de>
+Melanie Lipp <melanie.lipp@iws.uni-stuttgart.de>
+Melanie Lipp <melaniel@darth.iws.uni-stuttgart.de>
+Johannes Hommel <johannes.hommel@iws.uni-stuttgart.de>