Git commits in Moodle 3.6.4 by Zoltán Szarvas

commit f4e974d2fce84eeed9a128020c93d8f5319bd698
Author: Zoltán Szarvas <zoltan.szarvas@neting.hu>
Date:   Mon, 04 Feb 2019 23:24:22 +0800
Tag:    v3.6.4

MDL-63959 mod_feedback: Fixed nested dependency handling