Add a .mailmap file to make the commit logs a little nicer

Signed-off-by: Luke Shumaker <lukeshu@datawire.io>

.mailmap

@@ -0,0 +1,15 @@
+Alex Gervais <alex@datawire.io>                        alex <alex@datawire.io>
+Alex Gervais <alex@datawire.io>                        <alex.gervais@gmail.com>
+Donny Yung <donaldyung@datawire.io>                    <donaldryung@gmail.com>
+Flynn <flynn@datawire.io>                              <kflynn@users.noreply.github.com>
+John Esmet <johnesmet@datawire.io>                     <jesmet@appnexus.com>
+Luke Shumaker <lukeshu@datawire.io>                    <lukeshu@lukeshu.com>
+Maxime Legault-Venne <maximelegaultvenne@datawire.io>  <mlegoven@hotmail.com>
+Rafael Schloming <rhs@datawire.io>                     <rhs@alum.mit.edu>
+Thomas Hallgren <thomas@datawire.io>                   <thomas@tada.se>
+
+Abhay Saxena <ark3@email.com>            <ark3@datawire.io>
+Alvaro Saurin <alvaro.saurin@gmail.com>  <1841612+inercia@users.noreply.github.com>
+Philip Lombardi <plombardi89@gmail.com>  plombardi <plombardi89@gmail.com>
+Philip Lombardi <plombardi89@gmail.com>  <893096+plombardi89@users.noreply.github.com>
+Philip Lombardi <plombardi89@gmail.com>  <plombardi@datawire.io>