Add .mailmap git file for correct display of names

LPTK · LPTK · commit 34b6b1759168 · 2019-02-27T20:26:30.000+01:00
diff --git a/.mailmap b/.mailmap
@@ -0,0 +1 @@
+Lionel Parreaux <lionel.parreaux@gmail.com>
diff --git a/docs/blog/_posts/2019-03-01-13th-dotty-milestone-release.md b/docs/blog/_posts/2019-03-01-13th-dotty-milestone-release.md
@@ -375,7 +375,7 @@ According to `git shortlog -sn --no-merges 0.12.0-RC1..0.13.0-RC1` these are:
      5  Allan Renucci
      4  Miles Sabin
      3  Tobias Bordenca
-     3  LPTK
+     3  Lionel Parreaux
      3  Abel Nieto
      2  Lukas Rytz
      1  lpwisniewski
