Overview of Changes in GTK 3.98.0
=================================

  While this release gets significantly closer to what we aim for in GTK 4,
  there are still a few big items outstanding that we are currently working
  on:

  - Event controllers for keyboard shortcuts
  - Movable popovers
  - Row-recycling list and grid views
  - Revamped accessibility infrastructure
  - Animation API

  We will do further 3.98.x snapshots as these land.

  *****************

* The DND refactoring has been completed. The GTK API for DND has been turned
  into event controllers: GtkDragSource and GtkDropTarget. Support for file
  transfers via file transfer portal has been added for both DND and the clipboard.

* Child surfaces have been removed. GDK only supports toplevel and popup surfaces
  now. The client-side window implementation has been removed too. On the GTK side,
  the GtkNative interface has been introduced for widgets that have their own
  surface. This cleanup is not 100% complete yet.

* Global positions and related apis such as gdk_surface_move are no longer available.
  
* A constraint-based layout manager has been added.

* Many classes have been made explicitly non-subclassable, and the widget hierarchy
  has been simplified, by making widgets derive directly from GtkWidget instead of
  a container.

* Menu-related changes:
 - GtkMenu, GtkMenuBar and related classes have been removed. They are being replaced
   by GMenu and popover-based variants. Popover menus can now do traditional, nested
   menus, and model buttons show accelerators.
 - Context menus are no longer created with ::populate-popup signals, but use menu
   models and actions.
 - Widget actions can be created in class_init, with gtk_widget_class_install_action.
 - GtkToolbar has been removed as well.

* Text-related changed:
 - Text cursor blinking has been made smooth.
 - GtkTextView is caching rendernodes for the visible text range now, improving the
   scrolling performance of text.
 - Add a simple undo stack for text edits has been added.

* The native Win32 filechooser backend supports choices.

* GtkTreeView renders tree and grid lines with textures.

* GtkEmojiChooser has been made public.

* GtkGestureMultiPress has been renamed to GtkGestureClick.

* GtkWidget has api to handle style classes: gtk_widget_add_style_class.
  This is the first step towards moving away from GtkStyleContext.

* X11-specific changes:
 - XI2 is now mandatory
 - The xim input method has been removed

* Wayland-specific changes:
 - The loading of cursor themes has been improved to load cursors on demand,
   and no longer relies on libwayland-cursor.

* The GL renderer is now sharing icon and glyph caches for all surfaces,
  and has better support for blurring and shadow rendering.

* Performance-related changes:
 - GTK provides profiling information for Sysprof when launched with GTK_TRACE=1.
 - Css computation has been optimized
 - Css lookups are using a Bloom filter
 - Icon loading IO has been moved to a thread