New features:

    * Added fallback mechanism for config.language.
    * Added support for using multiple css style sheets within the editor.

Fixed issues:

    * Added validation for URL value in Image dialog.
    * Fixed Context Menu issue when triggered using Shift+F10.
    * Maximize control's tool tip was wrong once it is maximized.
    * Toolbar is chopped off in Safari browser 3.x.
    * Float panels are left on screen while editor is destroyed.
    * Double click event is incorrect handled in 'divreplace' sample.
    * Fixed TAB key on toolbar to not focus disabled buttons.
    * Fixed focus and blur events in source view mode.
    * Floating panels are off by (-1px, 0px) in RTL mode.
    * Refactored use of CKEDITOR.env.isCustomDomain().
    * HC detection caused js error.
    * Fixed setStyle float on IE7 strict.
    * Tab and Shift+Tab was not working to cycle through CTRL+SHIFT+F10 context menu in IE.
    * Default context menu isn't disabled in toolbar, status bar, panels...
    * Now there is no image previews when the URL is empty in image dialog.
    * Context submenu was lacking uiColor.
    * Dialogs now select all text when tabbing to text inputs.
    * Cell Properties dialog was missing color selection option.
    * Fixed "Match cyclic" field in Find & Replace dialog.
    * borderColor table cell attribute haven't worked for none-IE
    * In IE quirks mode + toolbar collapsed + source mode editing block height was incorrect.
    * Fixed: right clicking in Kama skin can lead to a javascript error.
    * Wysiwyg mode caused the host page scroll.
    * Fixed editor's auto adjusting on DOM structure were confusing the dirty checking mechanism.
    * Fixed regression of [3816] where turn on design mode was causing Firefox3 to scroll the host page.
    * Added basic API sample.
    * Normalize css font-family style text for correct comparision.
    * Insert block element in empty editor document should not create new paragraph.
    * 'id' attribute is missing with Flash dialog advanced page.
    * Delete selected control type element when 'Backspace' is pressed on it.
    * Fixed: dialog changes confirmation on image dialog appeared even when no changes have been made.
    * Dash and dot could appear in attribute names.
    * 'maximize' and 'showblock' commands shouldn't take editor focus.
    * Fixed 'Enter'/'Esc' key is not working on dialog button.
    * 'Strange Template' now come with a style attribute for width.
    * Fixed styles plugin incorrectly adding semicolons to style text.
    * Fixed loading unminified _source files when ckeditor_source.js is used.
    * Dialog settings defaults can now be overridden in-page through the CKEDITOR.config object.
    * The 'stylesCombo_stylesSet' configuration entry didn't work for full URLs.
    * Fixed scope attribute in th.
    * Fixed bug to use custom icon in context menus. Thanks to george.
    * Fixed select field dialog layout in Safari.
    * Fixed unable to open dialog without editor focus in IE.
    * Fixed maximize without editor focus throw error in IE.
    * Updated the following language files:
          o Arabic;
          o Czech;
          o Danish;
          o Dutch;
          o Hebrew;
          o Polish.