changelog: mention hg next --abort

8 jobs for topic/default/next-abort in 7 minutes and 51 seconds (queued for 1 minute and 33 seconds)
Status Name Job ID Coverage
  Test
passed checks-py2 #197688

00:01:47

passed checks-py3 #197689

00:01:37

passed doc #197694

00:00:31

manual pytype #197687
allowed to fail manual
passed tests-py2-cext #197690

00:07:37

passed tests-py2-pure #197691

00:07:15

passed tests-py3-cext #197692

00:07:08

passed tests-py3-pure #197693

00:05:01