2.59.1: (unstable): Distro packagers should probably not package this yet. Glib: * ustring: Fix wchar conversion on macOS with libc++ (Clemens Lang) Bug #795338 * Avoid compiler warnings from function pointer conversions (Kjell Ahlstedt) Issue libsigcplusplus#1 (sharkcz) (Kjell Ahlstedt) Issue libsigcplusplus#8 (db0451) * ustring: Simplify format() using C++17 fold expression. (Daniel Boles) Merge request !4 Gio: * Application: Add set_option_context_parameter_string(), set_option_context_summary(), set_option_context_description(). (Kjell Ahlstedt) * DesktopAppInfo: Add get_locale_string() (Kjell Ahlstedt) * SocketClient: Take copy in RefPtrs for signal args (Daniel Boles) Issue #28 (Jens Mühlenhoff) * Make SignalProxy_async_callback() available to e.g. gtkmm (Kjell Ahlstedt) gmmproc: * _WRAP_METHOD: Accept ":" in slot_callback parameter (Kjell Ahlstedt) Build: * Require C++17. (Murray Cumming) * Require glib-2.0 >= 2.55.1 (Kjell Ahlstedt) Issue #29 (Mart Raudsepp) * Replace the Visual Studio project files with MSVC NMake project files (Chun-wei Fan) Merge request !2 * Change the ABI to glibmm-2.60 (Kjell Ahlstedt) Documentation: * Use libsigc++-3.0.tag for libsigc++ documentation (Kjell Ahlstedt)