Developer credits
Git commits in Moodle 2.9.5 by Josh Marshall
commit a9745eb95af649395ee1ff526d65cf53a2407642 Author: Josh Marshall <josh.marshall@netspot.com.au> Date: Thu, 29 Oct 2015 13:21:13 +0800 Tag: v2.9.5 MDL-52930 forum: Correct get_unmailed_posts logic