corsix-th: 0.21-1~getdeb1

  * New upstream version
    This is mainly a bugfix release, but a few minor features are still also
    introduced, see the changelog below.

    --- Gameplay ---
    * Fix: Staff would sometimes not go for a break.
    * Fix: A few crashes related to Handymen.
    * Fix: An error could occur if a fax message was removed just as it was
    animating into view.
    * Fix: Patients could sometimes be told to go home multiple times,
      resulting in a crash.
    * Fix: If a queueing patient was heading for a drinks machine just as the
    player moved that machine the game would crash.

    --- User Interface ---
    * Added: Scrolling momentum when using the middle button.
    * Added: There is now a clock in the right corner of the menu bar that
      shows the real world time. It can be toggled between AM/PM and 24h
      in the configuration file.

    --- Hotkeys ---
    * Added: Hotkeys for the Jukebox (J), Save game menu (Shift + S),
      Load game menu (Shift + L), to restart the level (Shift + R) and
      finally
      quit the current game and take you back to the opening screen (Shift +
      Q).
    * Change: Restart is now Shift + F10 instead of only F10.
    * Change: Toggle adviser is now Shift + A instead of only A.
    * Change: Key combinations will only trigger if that exact combination
      is pressed. E.g. Ctrl + R will not trigger R too.
    * Change: Alt + F4 is now the hotkey to quit CorsixTH.
    * Fix: Added a configuration option to have the possibility to use Shift
    + C
      as hotkey to open the Drug casebook instead of C. This is to workaround
      a bug that when you press on the volume down key on your keyboard
      the Drug casebook would open.

    --- Map Editor ---
    * Added: Undo/Redo functionality.
    * Added: Street lamps and the dead looking tree.