Prepare release notes for v1.6.0-beta.0

Signed-off-by: Derek McGowan <derek@mcg.dev>

.mailmap

@@ -19,6 +19,7 @@ Cao Zhihao <caozhihao@163.com>
 Cao Zhihao <caozhihao@163.com> <caozhihao.xd@bytedance.com>
 Carlos Eduardo <me@carlosedp.com> <me@carlosedp.com>
 chenxiaoyu <weixian.cxy@alibaba-inc.com>
+Cory Bennett <cbennett@netflix.com>
 Cristian Staretu <cristian.staretu@gmail.com>
 Cristian Staretu <cristian.staretu@gmail.com> <unclejack@users.noreply.github.com>
 Daniel Dao <dqminh89@gmail.com>
@@ -32,9 +33,11 @@ Fahed Dorgaa <fahed.dorgaa@gmail.com>
 Frank Yang <yyb196@gmail.com>
 Fupan Li <lifupan@gmail.com>
 Fupan Li <lifupan@gmail.com> <fupan.lfp@antfin.com>
+Fupan Li <lifupan@gmail.com> <fupan.lfp@antgroup.com>
 Georgia Panoutsakopoulou <gpanoutsak@gmail.com>
 Guangming Wang <guangming.wang@daocloud.io>
 Haiyan Meng <haiyanmeng@google.com>
+haoyun <yun.hao@daocloud.io>
 Harry Zhang <harryz@hyper.sh> <harryzhang@zju.edu.cn>
 Hu Shuai <hus.fnst@cn.fujitsu.com>
 Hu Shuai <hus.fnst@cn.fujitsu.com> <hushuaiia@qq.com>
@@ -60,6 +63,7 @@ Justin Terry <juterry@microsoft.com> <jterry75@users.noreply.github.com>
 Kenfe-Mickaël Laventure <mickael.laventure@gmail.com>
 Kevin Kern <kaiwentan@harmonycloud.cn>
 Kevin Xu <cming.xu@gmail.com>
+Kitt Hsu <kitt.hsu@gmail.com>
 Kohei Tokunaga <ktokunaga.mail@gmail.com>
 Krasi Georgiev <krasi.root@gmail.com> <krasi@vip-consult.solutions>
 Lantao Liu <lantaol@google.com>
@@ -77,6 +81,7 @@ Michael Crosby <crosbymichael@gmail.com> <michael@thepasture.io>
 Michael Katsoulis <michaelkatsoulis88@gmail.com>
 Mike Brown <brownwm@us.ibm.com> <mikebrow@users.noreply.github.com>
 Mohammad Asif Siddiqui <mohammad.asif.siddiqui1@huawei.com>
+Ng Yang <wssccc@qq.com>
 Nishchay Kumar <mrawesomenix@gmail.com>
 Oliver Stenbom <oliver@stenbom.eu> <ostenbom@pivotal.io>
 Phil Estes <estesp@gmail.com> <estesp@linux.vnet.ibm.com>
@@ -107,10 +112,14 @@ Tõnis Tiigi <tonistiigi@gmail.com>
 Wade Lee <weidonglee27@gmail.com>
 Wade Lee <weidonglee27@gmail.com> <weidonglee29@gmail.com>
 Wade Lee <weidonglee27@gmail.com> <21621232@zju.edu.cn>
+wanglei <wllenyj@linux.alibaba.com>
+wanglei <wllenyj@linux.alibaba.com> <wanglei01@alibaba-inc.com>
+wangzhan <wang.zhan@smartx.com>
 Wei Fu <fuweid89@gmail.com>
 Wei Fu <fuweid89@gmail.com> <fhfuwei@163.com>
 Xiaodong Zhang <a4012017@sina.com>
 Xuean Yan <yan.xuean@zte.com.cn>
+Yang Yang <yang8518296@163.com>
 Yue Zhang <zy675793960@yeah.net>
 Yuxing Liu <starnop@163.com>
 Zhang Wei <zhangwei555@huawei.com>