Merge pull request astropy#511 from bsipocz/MAINT_mailmap

MAINT: updating mailmap after v1.5

.mailmap

@@ -1,8 +1,12 @@
 Adam Ginsburg     <keflavich@gmail.com>
 Adrian Damian     <adrian.damian@nrc.ca> <Adrian.Damian@nrc.ca>
+Adrian Damian     <adrian.damian@nrc.ca> <andamian@gmail.com>
 Brigitta Sipőcz   <bsipocz@gmail.com>
 Brigitta Sipőcz   <bsipocz@gmail.com> <b.sipocz@gmail.com>
 Christine Banek   <cbanek@lsst.org> <cbanek@gmail.com>
+Chuanming Mao     <myosotis.mao@gmail.com>
+Chuanming Mao     <myosotis.mao@gmail.com> <113032306+ChuanmingMao@users.noreply.github.com>
+Dustin Jenkins    <djenkins.cadc@gmail.com> <at88mph@users.noreply.github.com>
 Hugo van Kemenade <hugovk@users.noreply.github.com>
 Markus Demleitner <m@tfiu.de>
 Pey Lian Lim      <2090236+pllim@users.noreply.github.com>
@@ -12,4 +16,4 @@ Stefan Becker     <ich@funbaker.de> <funbaker@users.noreply.github.com>
 Tess Jaffe        <trjaffe@gmail.com>
 Theresa Dower     <dower@stsci.edu>
 Tim Jenness       <tjenness@lsst.org> <tim.jenness@gmail.com>
-Tom Donaldson     <tdonaldson@stsci.edu>
+Tom Donaldson     <tdonaldson@stsci.edu>