Git commits in Moodle 3.7.5 by Paul Holden

commit ad7d0f05de6396356ef845ab43ec8ab4e32b3cee
Author: Paul Holden <pholden@greenhead.ac.uk>
Date:   Wed, 12 Jun 2019 23:13:29 +0800
Tag:    v3.7.5

MDL-65884 filters: update exclusive separator characters for tags.