Add myself to .mailmap

ldm0 · ldm0 · commit 42ddcd3ec5bf · 2020-05-27T16:16:27.000+08:00
diff --git a/.mailmap b/.mailmap
@@ -70,6 +70,8 @@ David Manescu <david.manescu@gmail.com> <dman2626@uni.sydney.edu.au>
 David Ross <daboross@daboross.net>
 Derek Chiang <derekchiang93@gmail.com> Derek Chiang (Enchi Jiang) <derekchiang93@gmail.com>
 Diggory Hardy <diggory.hardy@gmail.com> Diggory Hardy <github@dhardy.name>
+Donough Liu <ldm2993593805@163.com> <donoughliu@gmail.com>
+Donough Liu <ldm2993593805@163.com> DingMing Liu <liudingming@bupt.edu.cn>
 Dustin Bensing <dustin.bensing@googlemail.com>
 Dylan Braithwaite <dylanbraithwaite1@gmail.com> <mail@dylanb.me>
 Dzmitry Malyshau <kvarkus@gmail.com>

-Original file line number
+Diff line change
 David Ross <[email protected]>
 Derek Chiang <[email protected]> Derek Chiang (Enchi Jiang) <[email protected]>
 Diggory Hardy <[email protected]> Diggory Hardy <[email protected]>
 +Donough Liu <[email protected]> <[email protected]>
 +Donough Liu <[email protected]> DingMing Liu <[email protected]>
 Dustin Bensing <[email protected]>
 Dylan Braithwaite <[email protected]> <[email protected]>
 Dzmitry Malyshau <[email protected]>