* Yaml formatted setup files are now produced by default.
(Perl formatted setup files can still be used.)
* Add timezone setting in setup file. This alows time zone to be configured
via the web.
* comment: Better fix to avoid showing comments of subpages, while
not breaking manual inlining of comments.
* meta: Security fix; don't allow alternative stylesheets to be added
on pages where the htmlscrubber is enabled.
(Updating this leaf package during the freeze for the security and
bug fixes.)