release: prepare for 2.5.2 release

Signed-off-by: Stephen J Day <stephen.day@docker.com>

.mailmap

@@ -16,3 +16,4 @@ davidli <wenquan.li@hp.com> davidli <wenquan.li@hpe.com>
 Omer Cohen <git@omer.io> Omer Cohen <git@omerc.net>
 Eric Yang <windfarer@gmail.com> Eric Yang <Windfarer@users.noreply.github.com>
 Nikita Tarasov <nikita@mygento.ru> Nikita <luckyraul@users.noreply.github.com>
+Misty Stanley-Jones <misty@docker.com> Misty Stanley-Jones <misty@apache.org>

AUTHORS

@@ -16,9 +16,9 @@ Andrew T Nguyen <andrew.nguyen@docker.com>
 Andrey Kostov <kostov.andrey@gmail.com>
 Andy Goldstein <agoldste@redhat.com>
 Anis Elleuch <vadmeste@gmail.com>
-Anton Tiurin <noxiouz@yandex.ru>
 Antonio Mercado <amercado@thinknode.com>
 Antonio Murdaca <runcom@redhat.com>
+Anton Tiurin <noxiouz@yandex.ru>
 Arien Holthuizen <aholthuizen@schubergphilis.com>
 Arnaud Porterie <arnaud.porterie@docker.com>
 Arthur Baars <arthur@semmle.com>
@@ -31,6 +31,8 @@ bin liu <liubin0329@gmail.com>
 Brian Bland <brian.bland@docker.com>
 burnettk <burnettk@gmail.com>
 Carson A <ca@carsonoid.net>
+Cezar Sa Espinola <cezarsa@gmail.com>
+Charles Smith <charles.smith@docker.com>
 Chris Dillon <squarism@gmail.com>
 cyli <cyli@twistedmatrix.com>
 Daisuke Fujita <dtanshi45@gmail.com>
@@ -39,15 +41,16 @@ Darren Shepherd <darren@rancher.com>
 Dave Trombley <dave.trombley@gmail.com>
 Dave Tucker <dt@docker.com>
 David Lawrence <david.lawrence@docker.com>
+davidli <wenquan.li@hp.com>
 David Verhasselt <david@crowdway.com>
 David Xia <dxia@spotify.com>
-davidli <wenquan.li@hp.com>
 Dejan Golja <dejan@golja.org>
 Derek McGowan <derek@mcgstyle.net>
 Diogo Mónica <diogo.monica@gmail.com>
 DJ Enriquez <dj.enriquez@infospace.com>
 Donald Huang <don.hcd@gmail.com>
 Doug Davis <dug@us.ibm.com>
+Edgar Lee <edgar.lee@docker.com>
 Eric Yang <windfarer@gmail.com>
 Fabio Huser <fabio@fh1.ch>
 farmerworking <farmerworking@gmail.com>
@@ -58,8 +61,8 @@ gabriell nascimento <gabriell@bluesoft.com.br>
 Gleb Schukin <gschukin@ptsecurity.com>
 harche <p.harshal@gmail.com>
 Henri Gomez <henri.gomez@gmail.com>
-Hu Keping <hukeping@huawei.com>
 Hua Wang <wanghua.humble@gmail.com>
+Hu Keping <hukeping@huawei.com>
 HuKeping <hukeping@huawei.com>
 Ian Babrou <ibobrik@gmail.com>
 igayoso <igayoso@gmail.com>
@@ -70,20 +73,20 @@ Jessie Frazelle <jessie@docker.com>
 jhaohai <jhaohai@foxmail.com>
 Jianqing Wang <tsing@jianqing.org>
 John Starks <jostarks@microsoft.com>
+Jonathan Boulle <jonathanboulle@gmail.com>
 Jon Johnson <jonjohnson@google.com>
 Jon Poler <jonathan.poler@apcera.com>
-Jonathan Boulle <jonathanboulle@gmail.com>
 Jordan Liggitt <jliggitt@redhat.com>
 Josh Hawn <josh.hawn@docker.com>
 Julien Fernandez <julien.fernandez@gmail.com>
-Ke Xu <leonhartx.k@gmail.com>
 Keerthan Mala <kmala@engineyard.com>
 Kelsey Hightower <kelsey.hightower@gmail.com>
 Kenneth Lim <kennethlimcp@gmail.com>
 Kenny Leung <kleung@google.com>
-Li Yi <denverdino@gmail.com>
-Liu Hua <sdu.liu@huawei.com>
+Ke Xu <leonhartx.k@gmail.com>
 liuchang0812 <liuchang0812@gmail.com>
+Liu Hua <sdu.liu@huawei.com>
+Li Yi <denverdino@gmail.com>
 Louis Kottmann <louis.kottmann@gmail.com>
 Luke Carpenter <x@rubynerd.net>
 Mary Anthony <mary@docker.com>
@@ -94,6 +97,7 @@ Matt Robenolt <matt@ydekproductions.com>
 Michael Prokop <mika@grml.org>
 Michal Minar <miminar@redhat.com>
 Miquel Sabaté <msabate@suse.com>
+Misty Stanley-Jones <misty@docker.com>
 Morgan Bauer <mbauer@us.ibm.com>
 moxiegirl <mary@docker.com>
 Nathan Sullivan <nathan@nightsys.net>
@@ -113,6 +117,7 @@ Rodolfo Carvalho <rhcarvalho@gmail.com>
 Rusty Conover <rusty@luckydinosaur.com>
 Sean Boran <Boran@users.noreply.github.com>
 Sebastiaan van Stijn <github@gone.nl>
+Sebastien Coavoux <s.coavoux@free.fr>
 Serge Dubrouski <sergeyfd@gmail.com>
 Sharif Nassar <sharif@mrwacky.com>
 Shawn Falkner-Horine <dreadpirateshawn@gmail.com>
@@ -134,11 +139,12 @@ Tonis Tiigi <tonistiigi@gmail.com>
 Tony Holdstock-Brown <tony@docker.com>
 Trevor Pounds <trevor.pounds@gmail.com>
 Troels Thomsen <troels@thomsen.io>
+Victoria Bialas <victoria.bialas@docker.com>
 Vincent Batts <vbatts@redhat.com>
 Vincent Demeester <vincent@sbr.pm>
 Vincent Giersch <vincent.giersch@ovh.net>
-W. Trevor King <wking@tremily.us>
 weiyuan.yl <weiyuan.yl@alibaba-inc.com>
+W. Trevor King <wking@tremily.us>
 xg.song <xg.song@venusource.com>
 xiekeyang <xiekeyang@huawei.com>
 Yann ROBERT <yann.robert@anantaplex.fr>

version/version.go

@@ -8,4 +8,4 @@ var Package = "github.com/docker/distribution"
 // the latest release tag by hand, always suffixed by "+unknown". During
 // build, it will be replaced by the actual version. The value here will be
 // used if the registry is run after a go get based install.
-var Version = "v2.4.1+unknown"
+var Version = "v2.5.2+unknown"