gtkmm4-4.12.0-bp156.1.1

- Update to version 4.12.0:
  + Gtk:
  - AboutDialog: Deprecate ctor with use_header_bar.
  - Add SymbolicPaintable.
  - Add ScrollInfo and enum ListScrollFlags.
  - ColumnView, GridView, ListView, Viewport: Add scroll_to().
  - ColumnViewRow, ListItem: Add
    set/get/property_accessible_description() and
    set/get/property_accessible_label().
  - DropDown: Add set/get/property_header_factory() and
    set/get/property_search_match_mode().
  - FileLauncher: Add set/get/property_always_ask().
  - Window: Add is_suspended() and property_suspened().
  + Documentation:
  - Remove README.SUN and other obsolete files
  - Gtk::Widget: Describe managed and non-managed widgets
  + Build:
  - recentinfo.hg: Fix Visual Studio build
  - Require gtk4 >= 4.12.0

- Add explicit pkgconfig(epoxy) BuildRequires, previously pulled in
  by gtk4.

- Update to version 4.10.0:
  + Gdk:
  - Add TextureDownloader
  - Add enum MemoryFormat, identical to MemoryTexture::Format
  - Texture: Add get_format()
  + Gtk:
  - VolumeButton: Deprecated
  - ProgressBar: Deprecate property_ellipsize()
  - FileDialog: open_multiple_finish() and
    select_multiple_folders_finish() return
    std::vector<Glib::RefPtr<Gio::File>> instead of
    Glib::RefPtr<Gio::ListModel>.
  - FileChooser: Deprecate get_files() and
    get_shortcut_folders(). Add get_files2() and
    get_shortcut_folders2().
  - FileDialog: Make open[_finish](), select_folder[_finish](),
    save[_finish](), open_multiple[_finish](),
    select_multiple_folders[_finish]() non-const.
  - FontDialog: Make choose_family[_finish]() and
    choose_face[_finish]() non-const.
  - Accessible: Add set_accessible_parent(),
    update_next_accessible_sibling()
  - MenuButton: Add set/get/property_active().
  - ScaleButton: Add get/property_active().
  - SearchEntry: Add set/get_placeholder_text().
  + Tests: Add filedialog test
  + Build: Require gtk4 >= 4.10.0

- Update to version 4.9.3:
  + Gdk:
  - Display: Deprecate get_startup_notification_id().
  - Monitor: Add get/property_description().
  + Gtk:
  - Deprecated classes: Assistant, AssistantPage, LockButton,
    Statusbar
  - Gesture: Deprecate set_sequence_state().
  - Accessible: Add enum Accessible::PlatformState. Add
    get_at_context(), get_platform_state(),
    get_accessible_parent(), get_bounds(),
    get_first_accessible_child(), get_next_accessible_sibling().
  + Add ATContext and UriLauncher.
  + Documentation: Gtk::Image, Picture, StringList, StringObject:
    Improve class descriptions
  + Build: Require gtk4 >= 4.9.3

- Update to version 4.8.0:
  + Gtk:
  - TextView::get_tabs(): Fix a memory leak
  - Add enum ContentFit
  - Label: Add set/get/property_tabs()
  - Picture: Add set/get/property_content_fit()
  + Demos: Dialog demo: Add a non-modal dialog
  + Documentation: Don't translate the preprocessor macro name
    GDK_MODIFIER_MASK
  + Build: Require gtk4 >= 4.7.2

- Update to version 4.7.1:
  + Gdk:
  - Add enum Gdk::GLApi, deprecate enum Gdk::GLAPI
  - Add enum ScrollUnit
  - Event: Add get_scroll_unit()
  + Gtk:
  - Allow managed Gtk::Window's
  - Gtk::Object::_release_c_instance(): Unref orphan managed
    widgets
  - Entry: Add signal_activate()
  - Don't derive gtkmm__GtkXxx GTypes from final types
  - Application: Only create window on first activate
  - CheckButton: Add set/unset/get/property_child()
  - EventControllerScroll: Add get_unit()
  - Picture: Deprecate set/get/property_keep_aspect_ratio()
  - SearchEntry: Add set/get/property_search_delay()
  - DirectoryList, FilterListModel, FlattenListModel,
    MultiFilter, MultiSelection, MultiSorter, NoSelection,
    SelectionFilterModel, ShortcutController, SingleSelection,
    SliceListModel, SortListModel, TreeListModel: Add
    property_item_type(), property_n_items()
  - ApplicationWindow: Disambiguate activate_action()
  - Add class Inscription
  - Widget: Add signal_destroy()
  + Documentation: Gdk::Drag, Gdk::Drop, Gtk::Dialog, Gtk::Widget:
    Improve class descriptions
  + Build:
  - Meson build: Avoid configuration warnings
  - Meson build: Fix builds with Vulkan-enabled GTK
  - Require gtk4 >= 4.7.1