Code review comment for lp:~gary/launchpad/bug164196-1

<danilos> gary_poster, re -1, in lib/lp/bugs/model/bug.py you modify addCommentNotification to add activity parameter, but you don't modify addChange which I believe does a similar thing for non-comment changes — is that intentional or not?
<gary_poster> danilos, intentional. addChange uses change objects, which handle activities themselves