[glibmm] Created tag 2.64.4

[Kjell Ahlstedt <kjellahl src gnome org>]

The unsigned tag '2.64.4' was created.

Tagger: Kjell Ahlstedt <kjellahlstedt gmail com>
Date: 1605957550 +0100

    2.64.4

Changes since the last tag '2.64.2':

Chun-wei Fan (24):
      tools/[gerror|enum].m4: Make template<> classes exportable
      glib/src: Apply `decl_prefix GLIBMM_API` to _WRAP_ENUM
      gio/src: Apply `decl_prefix GIOMM_API` to _WRAP_ENUM
      glib/src/*.hg: Mark all _WRAP_ENUM() with decl_prefix
      gio/src/*.hg: Mark all _WRAP_ENUM() with decl_prefix
      Bump version
      Merge branch 'export-more-symbols-2-64' into 'glibmm-2-64'
      tools/m4/compare.m4: Allow decorating comparison operators
      Merge branch 'export-more-symbols-2-64' into 'glibmm-2-64'
      NMake Makefiles: Distinguish between MSVC 2015, 2017 and 2019
      Update README.win32
      glib/glibmm/ustring.h: Fix building on Visual Studio 2015
      NMake Makefiles: Clean up building tests and examples
      NMake Makefiles: Fix building GIO tests/examples
      Meson/Visual Studio builds: Include toolset version by default
      Merge branch 'meson-msvc-toolset-2-64' into 'glibmm-2-64'
      NMake Makefiles: Support ARM64 Windows builds
      NMake Makefiles: Fix generating [glib|gio]mm[config.h|.rc]
      NMake Makefiles: Use Meson-style DLL and .lib naming if requested
      class_shared.m4: Decorate private class prototype
      glib/glibmm/private/*.h: Decorate the classes with GLIBMM_API
      Merge branch 'private-export-2-64' into 'glibmm-2-64'
      class_interface.m4: Export the generated private class
      Merge branch 'more-private-exports-2-64' into 'glibmm-2-64'

Daniel Boles (2):
      ustring: Silence warning if MSC_VER is undefined/0
      propertyproxy_base: Fix using notify w/o prop name

Kjell Ahlstedt (15):
      Meson build: Set default value of the 'warnings' option to 'min'
      tools/gmmproc.in: Add a comment
      tools/defs_gen/*.py: Specify that this is python3 code
      docs/reference/: Update for Doxygen >= 1.8.16
      gmmproc: _CLASS_BOXEDTYPE, _CLASS_OPAQUE_COPYABLE: Fix move assignment
      gmmproc: Make h2def.py recognize more macros
      Glib::BalancedTree docs: Recommend std::map or std::unordered_map
      Meson build: Add missing Glib::Value and Variant documentation
      Meson build: Fix versioning on macOS
      Meson build: Fix versioning on macOS for libglibmm_generate_extra_defs
      glib/glibmm.h: Describe how to use glibmm with meson
      Gio::File docs: Fix names of thrown exceptions
      generate_wrap_init.pl.in: Use g_type_ensure()
      Remove unnecessary TODO and README files
      2.64.4