antirez/lamernews — pull request #138 by potomak (2013-05-18 15:23:08+00:00)
Title: Add link to parent comment for replies

Replies store a link to parent comment's id as `parent_id`. `parent_id`
attributes is `-1` for "top" comments.

Parent link is showed only at `comment_subthread`s using the new flag
`show_parent` added to `comment_to_html` method.

Closes #135