Developer credits
Git commits in Moodle 3.5.6 by Adrian Greeve
commit 8bf1ffc9edc1ba30285333e38193b0ed6f8a16cd Author: Adrian Greeve <abgreeve@gmail.com> Date: Fri, 12 Apr 2019 11:01:20 +0800 Tag: v3.5.6 MDL-62974 mod_lesson: Minor update to html class.