3.0.1 (stable) * Build: - Add meson build, alongside the existing autotools and CMake builds. (Kjell Ahlstedt, Chun-Wei Fan) - CMake: Fix the MSVC build, enable warnings, and disable unnecessary warnings, with MVSC. (Stuart Dootson) * connection: Allow copying of empty connections. (Aigrind) * sigc++/adaptors/bind.h: Make bind_functor::bound_ public. (Used by sigc::visitor::do_visit_each(). (Kjell Ahlstedt) Bug #26 * test_limit_reference: Avoid virtual-move-assign warning (seen with g++ 9.2) (Murray Cumming) * signal: slot_iterator_buf: Remove unused T_result default type (Murray Cumming) * tests: Slight cleanups (Murray Cumming) * Remove unused #ifdefed code. (Murray Cumming)