- Patch #7966 by Goba: The box has it's content wrapped in a paragraph now, which is not suitable for the purposes the box is used in. Boxes are used to wrap tables or forms with titles. The comment module uses theme(box, ...) to wrap forms into boxes for example. Therefore using a paragraph does not make the output valid XHTML and a div is needed.

- Patch #6484 by Goba:
  + A small typo on tracker module, which prevented the help from displaying.
  + For for a HTML tag closing buglet which made Opera completely mess up
    the page.
  + Translation fixes in story.module.

- Patch 5775 by Goba: fixes the only error currently reported by the doxygen
  parser in Drupal core, plus fixes some errorneous (copy-pasted) doxygen docs.

- Changed some double quotes to single quotes.

  parameter array.

- Patch #5448 by pz: removed code duplication from theme.inc.

- Fixed bug #5384: tablesort outputs invalid HTML (improved patch).

- Fixed bug #5384: tablesort outputs invalid HTML.

- Patch 5140 by Moshe: removed the theme("header") and theme("footer") functions.

 - Adds drupal_set_header() and drupal_get_headers().
 - Cache now stores custom headers.
 - Replace theme_head() with drupal_get_html_head(), added drupal_set_html_head().
 - Added RSS autodiscover links to node, blog and taxonomy pages.

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.

- Fixed bug #5004: missing <title>-tag in the example theme.

- Fixed bug 4916: users can have disabled themes.  Modified patch by Mathias.

   1. Remove the theme object.  There is no need to keep it around since meta
      information for a theme can be retrieved via list_themes().  All we really
      need is the theme name.

   2. Check if the user selected theme is enabled during theme initialization.
      This is the easiest place to put the check and doesn't mess with the user's
      settings.  Their database profile will still contain the disabled theme
      selection, but they will be rendering the default admin-selected theme
      until their chosen theme is once again activated.

- Fixed bug #4771: variable_get(site_name, ...) -> variable_get('site_name', ...);

- Updated documentation, small bug fix and small improvements to the <label>
  tags.

  To be discussed and investigated: when a form element has no title an empty
  <label> tag will be emitted (eg. "remember me" checkbox).  This doesn't make
  sense but is our best option for now.

- Accessibility improvements: made the <label>-tags use the 'for'-attribute.

- Fixed typo: $outpout -> $output.  Fixed bug 4690.

- 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.

- Bugfix: removed incorrect print statements from theme.inc.

- Small change to the default theme.

- Tidied up the DoxyGen comments.  Patch by Kjartan.

- Patch 185 by Ax: fixed undefined variables, synchronized xtemplate with sf, etc.

- Doxygen improvements.  Patch by Ax.

- Committed phase 4 of JonBob's menu system changes.

- Rollbacked Ax's theme.inc changes as they failed to apply correctly.

  * 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.

- Made the Xtemplate theme degrade gracefully when CSS is disabled.

- Committed phase 3 of JonBob's menu changes.  Adds an API for modules to
  define titles and breadcrumbs for their pages, and updates the theme
  system to display them.

   + block_list() (in block.module): returns an array of block objects for
     $region.
   + theme_blocks() (in theme.inc): uses block_list() and theme("block") to
     actually render them.

  Advantages:
   + Decouples blocks content and layout, allows block_list() to be used
     for non-output purposes (think "pull").
   + Unifies naming in theme.inc: render_blocks()) didn't really fit there.
   + Puts block_list() in blocks.module where it logically belongs.

- Removed some cruft from the Xtemplate theme.  Patch by Ax.

- Improved form items: added <label> tags to improve accessibility and added
  theme_form_element() function to improve themeability.  I left form_item()
  and the calls to form_item() intact for now.

- table(...) -> theme("table", ...)

- Improvement: made sure that the example theme uses the misc/drupal.css stylesheet.

- Committed stage 2 of the theme system improvements!  Patch by CodeMonkeyX.

- Bugfix: made theme_footer() call theme_closure() instead of itself.  Patch by Bart.

- 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.