1.0b2:
    * Extensive Firefox 4 support, including:
      - Tabs in :buffer completions and listings are grouped
        by panorama groups.
      - Only visible tabs are considered in tab numbering,
        gt/gn/gN, etc.
    * Improved startup time by a factor of 7.
    * Significant completion speed improvements, especially for
      JavaScript.
    * Greatly improved private mode support and :sanitize command.
      - Full integration with Firefox data clearing dialogs.
      - Support for sanitizing items at shutdown.
      - Fine-grained control over what data is sanitized and for
        what timespan.
      - Support for sanitizing reference to particular hosts,
        everywhere from command-line and message history to option
	values and cookies.
    * New and much more powerful incremental search implementation.
      Improvements over the standard Firefox find include:
      - Starts at the cursor position in the currently selected
        frame, unlike Firefox, which always starts at the start of
        the first frame.
      - Returns the cursor and viewport to their original position
        on cancel.
      - Backtracks to the first successful match after pressing
        backspace.
      - Supports reverse incremental search.
      - Input boxes are not focused when matches are highlighted.
    * Ex command parsing improvements, including:
      - Multiple Ex commands may now be separated by |
      - Commands can continue over multiple lines in RC files by
        prefixing the continuation lines with a \
      - The \ character is no longer treated specially within single
        quotes, i.e., 'fo\o''bar' ⇒ fo\o'bar
    * Command line is now hidden by default. Added c, C, and M to
      'guioptions'.
    * Hint mode improvements, including:
      - Added g; continued extended hint mode, which allows
        selecting multiple hints. Removed ;F.
      - Hints are now updated after scrolling and window resizing.
      - Added ;S mode for creating search keywords.
      - Added 'hintkeys' option.
      - Added "transliterated" option to 'hintmatching'.
    * JavaScript completion improvements, including:
      - The prototype of the function whose arguments are currently
        being typed is displayed during completion.
      - Non-enumerable global properties are now completed for the
        global object, including XMLHttpRequest and encodeURI.
    * The concept of completion contexts is now exposed to the user
      (see :h :contexts), allowing for powerful and fine-grained
      completion system customization.
    * IMPORTANT: Command script files now use the *.penta file extension.
    * IMPORTANT: Plugins are now loaded from the 'plugins/'
      directory in 'runtimepath' rather than 'plugin/'.
    * IMPORTANT: 'loadplugins' is now a regexlist option rather than
      a boolean.
    * IMPORTANT: 'cdpath' and 'runtimepath' no longer treat ",,"
      specially. Use "." instead.
    * IMPORTANT: Option value quoting has changed. List options will
      no longer be split at quoted commas and the option name,
      operators, and = sign may no longer be quoted. This will break
      certain automatically-generated configuration files.
      See :help stringlist
    * IMPORTANT: 'extendedhinttags' is now a regexmap rather than a
      string.
    * IMPORTANT: 'guioptions' default value has changed.
    * IMPORTANT: 'mapleader' is now an option rather than a :let
      variable.
    * Added "bookmarks", "diverted", and "links" to 'activate'
      option.
    * Added 'altwildmode' and <A-Tab> command-line key binding.
    * Added 'autocomplete' option for specifying which completion
      groups should be auto-completed.
    * Added 'banghist' option.
    * Added BookmarkChange, BookmarkRemove autocommands.
    * Added -keyword, -tags, -title to :delbmarks.
    * Added "passwords" and "venkman" dialogs to :dialog.
    * Added :extupdate command.
    * Replaced 'focuscontent' with 'strictfocus'.
    * Changed 'urlseparator' default value to '|'.
    * Added 'wildanchor' option.
    * Added -javascript option to :abbrev and :map.
    * Added several new options to :map.
    * Added -agent flag to :style.
    * Added :write !cmd and :write >>file.
    * Added :yank command.
    * Removed the :source line at the end of files generated by
      :mkpentadactylrc.
    * gf now toggles between source and content view.
      The | key binding has been removed.
    * :extadd now supports remote URLs as well as local files on
      Firefox 4.
    * :open now only opens files beginning with /, ./, ../, or ~/
    * 'complete' now defaults to "slf" but file completion only
      triggers when the URL begins as above.
    * Page zoom information is now shown in the status bar, and
      change in zoom status no longer appears in :messages.
    * Added ZO, ZI, ZM, and ZR as aliases for zO, zI, zM, and zR.
    * Completion list now behaves better when the multi-line output
      window is displayed.
    * Major help system improvements:
      - Plugins may now provide full-fledged ':help' documentation.
      - Add basic plugin authorship documentation.
      - The help system is newly modularized and features significant
        updates, rewrites, and formatting improvements.
    * Removed :beep.
    * Removed :edit, :tabedit, and :winedit aliases.
    * Removed :play.