New API in libsigc++ 2.8

Member sigc::signal0< T_return, T_accumulator >::connect (slot_type&& slot_)
Member sigc::signal1< T_return, T_arg1, T_accumulator >::connect (slot_type&& slot_)
Member sigc::signal2< T_return, T_arg1, T_arg2, T_accumulator >::connect (slot_type&& slot_)
Member sigc::signal3< T_return, T_arg1, T_arg2, T_arg3, T_accumulator >::connect (slot_type&& slot_)
Member sigc::signal4< T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_accumulator >::connect (slot_type&& slot_)
Member sigc::signal5< T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_accumulator >::connect (slot_type&& slot_)
Member sigc::signal6< T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_accumulator >::connect (slot_type&& slot_)
Member sigc::signal7< T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7, T_accumulator >::connect (slot_type&& slot_)
Member sigc::signal_base::connect (slot_base&& slot_)
Member sigc::signal_base::insert (iterator_type i, slot_base&& slot_)