DB\_Abstract::insert() now supports "ON DUPLICATE KEY UPDATE" construction.
Fixes in Comments module.
Comments in Blogs module works again, and depends on Comments module.
Added documentation for Comments module.

System version 0.223
modules:
Blogs 0.032
Comments 0.003
Cron 0.004
HybridAuth 2.1.1-cs10
OAuth2 0.011
Static_pages 0.024
plugins:
Admin_default_theme 0.001
TinyMCE 3.5.8-cs4