4.17.0 (unstable) 2025-01-26

Gdk:
* ColorState: Add get_oklab() and get_oklch().
* ContentFormats: Add is_empty().
  (Kjell Ahlstedt)

Gtk:
* SearchEntry2: Add signal_activate().
  (Kjell Ahlstedt) Issue #161 (PBS)
* ColorDialogButton, DropDown, Expander, FontDialogButton, MenuButton,
  PasswordEntry, Text: Add signal_activate().
  (Kjell Ahlstedt)
* Snapshot: Add and deprecate render_background().
  (Kjell Ahlstedt) Merge request !91 (Ezike Ebuka)
* ApplicationWindow: Deprecate unset/set/get_help_overlay().
* ShortcutLabel, ShortcutsGroup, ShortcutsSection, ShortcutsShortcut,
  ShortcutsWindow: Deprecate these classes.
* FileDialog: Add open_text_file(), open_text_file_finish(),
  open_multiple_text_files(), open_multiple_text_files_finish(),
  save_text_file(), save_text_file_finish().
* ListBox: Add set/get/property_tab_behavior().
* StringList: Add find().
* TextView: Add get_visible_offset().
  (Kjell Ahlstedt)

Build:
* Require gtk4 >= 4.17.3.
  Require glibmm >= 2.75.0. Actually required since gtkmm 4.15.0.
* Meson build: If GTKMM_NO_DIST_TESTS is defined, 'meson dist'
  does not run test programs.
  (Kjell Ahlstedt)