moving guides feedback here

Guys, we are moving the guides feedback over here.

Tickets in LH have done its job well all this time, but spam is
getting worse and it is becoming a waste of time to monitor them.

We'll do a pass to process any legitimate pending comments, but the LH
project itself has been archived, so comments are closed. We'll also
update the feedback pointer in the very guides next time they are
published.

Please, from now on post to this mailing list any errata etc. you find
in any guide.

Thanks!

-- fxn