Developer credits
Git commits in Moodle 3.3.0 by Jonathan Champ
commit d3a6b91aecfdc371cbb081e6235f1632d9b46430 Author: Jonathan Champ <jonathan_champ@ncsu.edu> Date: Sat, 17 Dec 2016 01:20:45 +0800 Tag: v3.3.0-beta MDL-57427 cache: Use perfdebug only when enabled