Update .mailmap.

* .mailmap: Add new entries for Danny Milosavljevic, Nils Gillmann and
  Raymond Nicholson.

.mailmap

@@ -12,6 +12,7 @@ Ben Woodcroft <donttrustben@gmail.com> <b.woodcroft@uq.edu.au>
 Ben Woodcroft <donttrustben@gmail.com> <donttrustben near gmail.com>
 Claes Wallin (韋嘉誠) <claes.wallin@greatsinodevelopment.com>
 Cyprien Nicolas <cyprien@nicolas.tf> <c.nicolas+gitorious@gmail.com>
+Danny Milosavljevic <dannym@scratchpost.org> <dannym+a@scratchpost.org>
 David Thompson <davet@gnu.org> <dthompson2@worcester.edu>
 David Thompson <davet@gnu.org> <dthompson@member.fsf.org>
 David Thompson <davet@gnu.org> <dthompson@vistahigherlearning.com>
@@ -28,10 +29,12 @@ Ludovic Courtès <ludo@gnu.org> <ludovic.courtes@inria.fr>
 Mathieu Lirzin <mthl@gnu.org> <mthl@openmailbox.org>
 Mathieu Lirzin <mthl@gnu.org> <mathieu.lirzin@openmailbox.org>
 Nikita Karetnikov <nikita@karetnikov.org> <nikita.karetnikov@gmail.com>
-Nils Gillmann <niasterisk@grrlz.net> <ng@niasterisk.space>
+Nils Gillmann <ng0@libertad.pw> <niasterisk@grrlz.net>
+Nils Gillmann <ng0@libertad.pw> <ng@niasterisk.space>
 Pjotr Prins <pjotr.public01@thebird.nl>
 Pjotr Prins <pjotr.public01@thebird.nl> <pjotr.public12@thebird.nl>
 Raimon Grau <raimonster@gmail.com> <raimon@3scale.net>
+Raymond Nicholson <rain1@openmailbox.org>
 Ricardo Wurmus <rekado@elephly.net>
 Ricardo Wurmus <rekado@elephly.net> <ricardo.wurmus@mdc-berlin.de>
 Sou Bunnbu (宋文武) <iyzsong@gmail.com>