- Added function node_invoke_all($hook, &$node, $op, $arg = 0).
- Added a _nodeapi hook that in time will replace the _node hook. Trying to make as few changes to existing code as possible until the new api is stabilized. - Modified node_form() to add administration options from other modules using the _nodeapi hook. - Modified node_save() to fetch which fields should be saved to the node table from the _nodeapi hook. - Moved comment and queue options from node_form() and node_save() to the modules _nodeapi hooks.