* The _validate hook and the _nodeapi('validate') hook of the node API (1) no longer take an 'error' parameter and (2) should no longer return an error array. To set an error, call form_set_error().
* The _form hook of the node module no longer takes a form hook and should not worry about displaying errors. Ditto for _nodeapi('form_post') and _nodeapi('form_pre').
CHANGES
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+ Introduced tabs. First, we extended the menu system to support tabs. Next, a tab was added for every link that was (1) an administrative action other than the implicit 'view' (2) relevant to that particular page only. This is illustrated by the fact that all tabs are verbs and that clicking a page's tab leads you to a subpage of that page.
+ Flattened the administration menu. The tabs helped simplify the navigation menu as I could separate 'actions' from 'navigation'. In addition, I removed the 'administer > configuration'-menu, renamed 'blocks' to 'sidebars' which I hope is a bit more descriptive, and made a couple more changes. Earlier, we already renamed 'taxonomy' to 'categorization' and we move 'statistics' under 'logs'.
+ Grouped settings. All settings have been grouped under 'administer > settings'.
TODO
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+ Update core themes: only Xtemplate default supports tabs and even those look ugly. Need help.
+ Update contributed modules. The menu() hook changed drastically. Updating your code adhere the new menu() function should be 90% of the work. Moreover, ensure that your modue's admin links are still valid and that URLs to node get updated to the new scheme ('node/view/x' -> 'node/x').
administrators will be able to define a custom 403 page, just as they
can define 404 pages now.
This needs to be documented in the "Changes since / migrating to ..."
pages.
+ only adds an optional parameter to url() and l(), so individual links
can be set to be absolute
+ modifies drupal_goto() to accept the parameters of url() without the
$absolute parameter, so cleaner invocations can be used
+ rework of some code in node_feed, making it much better to look at
(the current code uses foreach with an immediate brake to get the first
key of the associative array, geeeeez)
+ added xml:base to the rss tag generated by node_feed()
+ set all user mail URLs to be absolute
+ fix a small fragmented URL in user.module
easier to understand 'new' links. The 'new' links are clickable both
at the forum overview (to get to the new forum topics) and at the topic
overview (to get to the new comments).
+ removes the lots of pagers and indirect pager themeing
+ add the theme_pager() function, which should be called as
theme("pager", ...) to get a pager.
Dries Buytaert
Steven Wittens
Kjartan Mannes