- Added support for multiple user roles.  Patch by Jim Hriggs.

- Patch #7581 by bylund: made the archive module's calendar accessible.

- Patch by Adrian: added support for multiple database connections.

- Added support for 403 handling.  Patch by JonBob.  As a side benefit,
  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.

  configurable!  Menu items can be disabled, repositioned, added and
  so on.

  Upgrading to requires you to run update.php.

  This functionality depricates some of the 'navigation modules' in the
  contributions repository.  Furthermore, modules can now 'suggest'
  menu items and site adminstrators can choose to enable them.  Modules
  in the contributions repository should try to take advantage of this.

- Rewrote the profile module:

   + Added a 'created' field to the users table and renamed the 'timestamp'
     fied to 'changed' (cfr. node table).  Update.php will try to determine
     a 'created' timestamp for existing users.

   + The profile module no longer uses serialized data but has its own set
     of tables.  Known existing profile data is migrated by these new tables.
       TODO: migrate the birthday field.

   + The profile fields can be grouped, and within each group, profile fields
     can be sorted using weights.

   + The profile pages can be themed.

   + The profiles can be browsed based on certain properties/settings.

   + Change the _user hook: (i) 'private_view' and 'public_view' are merged
     into 'view' as there are no private fields and (ii) 'edit_form' has
     been renamed to 'edit'.

   + Avatar handling has been refactored and is now part of the user module.
     The users table has a dedicted 'picture' field.

   + Simplified the way themes should use display/visualize pictures or
     avatars.

   + Made it possible for administrators to replace or delete avatars.

   + ...

  I hope this make for a good base to build on collectively.

- Set the version number.

- Patch 5592 by Goba: let drupal_map_assoc() rule.  :-)

- Renamed CHANGELOG to CHANGELOG.txt for Windows uses.

- Patch 5789 by TDobes: added avatar support to the Xtemplate theme.

- Usability improvement: added a book navigation block.

Round 3 of aggregator improvements:

 - Added support for new tags:
   + Optinal feed image: <image> tag.
   + Dublin core dates: <dc:date> <dcterms:created>, <dcterms:issued>,
     <dcterms:modified>.
 - Usability improvements:
   + On the administration page, made the feed/bundle titles link
     to the feeds/bundles' pages.  On the feed/bundle's page, made
     the 'Last updated' field link to the administration page.
   + Moved the 'syndication' menu one level down.
 - Updated some content sensitive help.
 - Further improved themeability.
 - Fixed some invalid HTML.

- Many excellent news aggregator improvements by Kjartan:
    + Added drupal_http_request().
    + Replaced rssfeeds with OPML feed subscription list.
    + Added support for pubDate.
    + Added support for conditional gets using ETag and Last-Modified.

- Log the search terms in a new watchdog category.

- Added a note about the introduction of the file API.

- Reworked 404 (page not found) handling.  Patch by walkah.  You can specify a
  custom 404 page in the administration page.  As a result, error.php could be
  removed.

- Updated the CHANGELOG.

- Patch 0185 by Jeremy: made it possible to automatically disable modules when
  under heave load.

- Made it possible to auto-throttle blocks.  That is, blocks can be
  configured to be disabled when under excessive load.  Patch by Jeremy.

  * fixes all doxygen warnings [#]_ in the current code base
    + changes @param style from phpDocumentor (@param type $var desc) to doxygen (@param $var desc)
    + documents all undocumented parameters
    + escapes / fixes html warnings
    + fixes @defgroup in theme.inc
  * adds more groupings [#]_
    + drupal_{set|get}_title, drupal_{set|get}_breadcrumb
    + pager.inc: pager_api (pager_query(), pager_display()), pager pieces
  * adds a new group "themeable" which contains all themeable functions.

- Improved module loading when serving cached pages.  Moshe's bootstrap patch.

- Used legend and fieldset tags for the configuration page.

- Updated the CHANGELOG to document recent changes.

- Committed stage 1 of the theme system improvements.

  Some TODO's:
   * The sidebars of theme Marvin and theme UnConeD look unstyled.
   * CSS-ify theme UnConeD so we can remove the class around the functions.
   * Rewrite theme_init() not to use a class and simplify theme()
     accordingly.

- Improvement: made it possible to disable the comment controls and reworded some of the configuration settings.

- Improvement: removed a left-over from Drupal 4.2.0 (dead code).

- Improvement: replaced hard-coded XHTML around the XML icons with class="xml-icon".

- Improvement: removed the custom navigation menus shown at the top of the "user information page" and integrated them in the new navigation block.  The "my account" link in the navigation menu will unfold.  Also removed the "delete account" link/functionality (for now).

- Improvement: fix for "magic quotes" settings.  Patch by Steven.  I also removed check_php_settings().

- Improvement: block themability improvements.  Modified patch from Ax and Steve/CodeMonkeyX.

- Fixed bug #2617: editing user information does not work.  Patch by Kjartan.

- Updated the CHANGELOG: added a line about the book module changes, fixed
  some typos.

- Applied Moshe's tablesort patch!  Note that I changed the arrow images
  because those of Moshe where not identical.

- Committed Jeremy's session patch: this brings us one step closer to having
  session for anonymous users.

- Setting the date of the 4.2.0 release.