Log Message:
Update to 1.0.0beta3:

* 1.0.0beta3
    * The Japanese JPilot address book has been supported.
    * Back scrolling on Shift/Alt and Space key press has been enabled.
    * Attached text files are now canonicalized before encoded to BASE64
      to conform with RFC 2045.
    * The optimal Content-Transfer-Encoding will be used when attaching
      text files.
    * The icons of the receive dialog have been modified.
    * Mozilla Firefox has become a default web browser.
    * The auto-expanding status bar has been fixed.

* 1.0.0beta2
    * don't move or delete immediately at local filtering when immediate
      execution option is off.
    * 'Empty trash' has been added to the folder context menu.
    * 'Remove mailbox' has been removed from the folder context menu.
    * 'File' menu in the main menu has been reorganized.
    * AND/OR matching option has been added to the summary search dialog.
    * APOP setting became a separate option for POP3.

* 1.0.0beta1
    * Icons are added to the alert dialog and filter edit dialog.
    * Cc is added for the parameter of templates.
    * The menu of composition window has been reorganized.
    * Gettext has been upgraded to 0.14.1.
    * Some minor bugs of filtering have been fixed.

* 0.9.99
    * The new filtering system, which has many new features, has been
      implemented.
    * The handling of 'New' flags for messages has been modified.
    * The spool path setting can now take both file and directory.
    * Invalid URIs used by DnD has been fixed.
    * Other bugfixes have been made.