Hieraki2 status quiestion and postgres schema


I am trying to figure out the status of Hieraki project. It seems
that the
software in use in manuals.rubyonrails.com is old and the new(er)
is quite different. Is this correct? I am somehow confused because in
that the project wiki/track is under “spam attack” ( http://
www.hieraki.org/trac/timeline ).

Also it seems that there is only mysql schema for the current
release. I’ve
ported it to postgres and it seems to work well. Are there interest
in this

Thank you in advance,

– Svet