Log Message:
Update mergeant to 0.66.

For Release 0.66
----------------

 - Adaptations to Libgda and Libgnomedb's API changes
 - Better handling of transaction status when closing a workspace
 - Translations:
        - New 'sl' translation (Matic Zgur)
        - ca (Josep Puigdemont i Casamaj<C3><B3>)
        - dz (Pema Geyleg)
        - en_GB (David Lodge)
        - vi (Clytie Siddall)