Developer credits
Git commits in Moodle 3.8.6 by Tim Hunt
commit 8a15c4e0cae4d23eca2856e5e35643117fdbe133 Author: Tim Hunt <T.J.Hunt@open.ac.uk> Date: Fri, 02 Oct 2020 00:01:50 +0800 Tag: v3.8.6 MDL-69798 XML question export: excape special chars in idnumbers