Git commits in Moodle 3.5.5 by Mark Nelson

commit b5a94c3e858942913db41c35e597793c5e6c07de
Author: Mark Nelson <markn@moodle.com>
Date:   Wed, 23 Jan 2019 13:43:05 +0800
Tag:    v3.5.5

MDL-64644 completion: fixed assertions in privacy test


commit 2e77251c8b4d1d370e6aa94417fe0a44bf0e6ee8
Author: Mark Nelson <markn@moodle.com>
Date:   Wed, 23 Jan 2019 13:42:01 +0800
Tag:    v3.5.5

MDL-64644 completion: set status correctly in provider


commit 124c24eb0ec479567e1fa2c3016dad98e5bf3816
Author: Mark Nelson <markn@moodle.com>
Date:   Wed, 23 Jan 2019 13:39:29 +0800
Tag:    v3.5.5

MDL-64644 completion: ensure we return array for provider


commit 58a6e4bfe4fe115889fd70ebfe3961349c764d35
Author: Mark Nelson <markn@moodle.com>
Date:   Wed, 23 Jan 2019 12:58:35 +0800
Tag:    v3.5.5

MDL-63168 core_message: added unit test


commit f46413cb039c84cb2a1493d1de31ba322f6febd3
Author: Mark Nelson <markn@moodle.com>
Date:   Wed, 27 Jun 2018 15:28:42 +0800
Tag:    v3.5.5

MDL-62702 core_lib: updated the 'ltiprovider' readme_moodle.txt