Add a mailmap, for "git shortlog -nse" goodness

ctrueden · ctrueden · commit d1cfa50aa515 · 2017-12-20T11:06:28.000-06:00
diff --git a/.mailmap b/.mailmap
@@ -0,0 +1,2 @@
+Deborah Schmidt <hallo@frauzufall.de>
+Robert Haase <rhaase@mpi-cbg.de>

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+Deborah Schmidt <hallo@frauzufall.de>`
	`2`	`+Robert Haase <rhaase@mpi-cbg.de>`