Developer credits
Git commits in Moodle 3.9.x by Nadav Kavalerchik
commit b10155308fe57a4e0ccccd21a01cd96fbbb558a7 Author: Nadav Kavalerchik <nadavkav.gmail.com> Date: Sat, 01 Feb 2020 02:21:35 +0800 Tag: v3.9.0-beta MDL-45227 editor_atto: Add direction to default ATTO generated markup