Developer credits
Git commits in Moodle 3.6.0 by Guillermo Alvarez
commit e0dac0f4d7f6eb45b23c2eb4f21a584f4cb90b07 Author: Guillermo Alvarez <guillermo.alvarez@blackboard.com> Date: Sat, 25 Aug 2018 01:40:06 +0800 Tag: v3.6.0-beta MDL-63231 filepicker: Skype validation for null values