Add .mailmap file

.mailmap

@@ -0,0 +1,21 @@
+<bernd@graylog.com>	<bernd@torch.sh>
+<bernd@graylog.com>	<bernd@tuneafish.de>
+<dennis@graylog.com>	<dennis@lauschmusik.de>
+<dennis@graylog.com>	<dennis@torch.sh>
+<edmundo@graylog.com>	<e.alvarezj@gmail.com>
+<edmundo@graylog.com>	<edmundo@torch.sh>
+<garybot2@graylog.com>	<garybot2@torch.sh>
+<jochen@graylog.com>	<jochen+github@schalanda.name>
+<jochen@graylog.com>	<jochen@schalanda.name>
+<jochen@graylog.com>	<jochen@torch.sh>
+<kay@graylog.com>	<kay.roepke@xing.com>
+<kay@graylog.com>	<kay@torch.sh>
+<kay@graylog.com>	<kroepke@googlemail.com>
+<lennart@graylog.com>	<lennart.koopmann@xing.com>
+<lennart@graylog.com>	<lennart@scopeport.org>
+<lennart@graylog.com>	<lennart@socketfeed.com>
+<lennart@graylog.com>	<lennart@torch.sh>
+<marius@graylog.com>	<marius.sturm@googlemail.com>
+<marius@graylog.com>	<marius@torch.sh>
+Oliver Zeigermann <oliver@torch.sh>	<oliver.zeigermann@gmail.com>
+Oliver Zeigermann <oliver@torch.sh>	<oliver@torch.sh>