/** Emitted when some property of our content has changed */
mutable boost::signals2::signal<void (ChangeType, boost::weak_ptr<Content>, int, bool)> ContentChange;
+ /** Emitted when we have something important to tell the user */
+ boost::signals2::signal<void (std::string)> Message;
+
/** Current version number of the state file */
static int const current_state_version;