[glibmm] Created tag 2.63.1

[Kjell Ahlstedt <kjellahl src gnome org>]

The unsigned tag '2.63.1' was created.

Tagger: Kjell Ahlstedt <kjellahlstedt gmail com>
Date: 1568818420 +0200

    2.63.1

Changes since the last tag '2.61.1':

Dainis Jonitis (1):
      Fix callback races in glibmm when source is destructed

Daniel Boles (8):
      Property: Clarify “manipulate” → read and/or write
      Property: Getting Proxy from ReadOnly is const too
      Property: Add const get_proxy() returning ReadOnly
      ustring: Add sprintf(), wrapping g_strdup_printf()
      ustring: Fix warning/errors if sprintf("fmt only")
      ustring: Don't say "message string" for sprintf()
      ustring: Be extra clear about "count/types/order"
      ustring: Add overloads for const char* fmt . . .

Kjell Ahlstedt (26):
      NEWS: Add requirement glib-2.0 >= 2.59.2
      giomm.h: Add missing #include directives
      Doxyfile.in: Remove unused configuration constants
      Merge branch 'plug_ustring_make_valid_leak' into 'master'
      Glib::Checksum, Datetime, TimeZone: _CLASS_BOXEDTYPE
      Glib::Checksum, DateTime, TimeZone: Add #include <glibmm/value.h>
      gmmproc: Don't assume that enumerators can't contain lowercase letters
      Gio::Application: Add add_option_group()
      Glib::Property: Update for compatibility with Gtk::Builder
      gmmproc: Update enum.pl and h2def.py for new glib deprecation macros
      Glib::Variant<std::tuple<>>::create(): Fix memory leak
      Glib::init(), Gio::init(): Improve the documentation
      Glib::ustring docs: ustring can't always replace std::string
      Gio::DBus::Object: Fix refcounts in some vfuncs
      Glib, Gio: Regenerate docs.xml and .defs files
      Add Gio::DBus::ObjectProxy and Gio::DBus::ObjectSkeleton
      Gio::DBus::Object::get_interface_vfunc(): Don't add global symbol
      Add Gio::DBus::ObjectManager*
      Gio: Fix ownership of some lists and arrays
      Glib, Gio: Regenerate docs.xml and .defs files
      Remove Glib::TimeVal
      Gio::SocketControlMessage: Add add_deserialize_func()
      Glib::ustring documentation: Minor fix
      Gio::DBus::Introspection: Add a necessary #include
      Change the ABI to glibmm-2.64
      2.63.1

Martin Ejdestig (2):
      Fix memory leak in Glib::ustring::make_valid()
      Use convert_return_gchar_ptr_to_*() in a couple of ustring methods