Add release notes for IDNA2008

7 jobs for 26-switch-to-IDNA2008-non-transitional-processing in 7 minutes and 1 second (queued for 9 seconds)
Status Job ID Name Coverage
  Precheck
passed #4899
linux docker
precheck:debian:sid:amd64

00:00:12

 
  Build
passed #4900
linux docker
build:debian:sid:amd64

00:01:48

passed #4901
linux docker
build:debian:sid:i386

00:01:55

 
  Test
passed #4904
docker linux
systemtest:debian:sid:amd64

00:04:53

passed #4905
docker linux
systemtest:debian:sid:i386

00:04:37

passed #4902
docker linux
unittest:debian:sid:amd64

00:00:50

passed #4903
docker linux
unittest:debian:sid:i386

00:00:51