Changelog for gtk-sni-tray-0.1.11.1

Changelog for gtk-sni-tray

Fix menu popups on Wayland/layer-shell: use menuPopupAtWidget instead of menuPopupAtPointer which fails with "no trigger event" when the GdkEvent's window is not a valid GDK surface.
Fix menu item clicks: defer menu widget destruction via idleAdd with PRIORITY_LOW so GTK's activate signal fires before the widget is destroyed.
Fix DBus Event variant wrapping: correctly double-wrap the data parameter to produce wire type v instead of i.
Send Event DBus calls on a forked thread to avoid blocking the GTK main loop.
Default menu backend to HaskellDBusMenu (pure Haskell implementation).
Deferred popup for LibDBusMenu backend to avoid assertion failures from showing the menu before the C library finishes loading the layout.

Restore libdbusmenu (gi-dbusmenugtk3) as the default menu backend.
Add runtime-configurable menu backend selection: LibDBusMenu (default) or HaskellDBusMenu via trayMenuBackend in TrayParams and --menu-backend CLI flag.

Fix menu popups not appearing: restore widgetShowAll so menu items are visible, and use menuPopupAtPointer for reliable positioning on both X11 and Wayland.
Fix all -Wall warnings across library and executable.

Fix menu popup positioning on Wayland: use menuAttachToWidget instead of premature widgetShowAll so that menuPopupAtWidget can properly anchor the popup surface to the tray icon.

Replace libdbusmenu usage (gi-dbusmenugtk3) with a pure Haskell implementation of the com.canonical.dbusmenu protocol.
Add CSS style classes/names to tray menu widgets to make them themeable.

Fix type error with DM.Menu and Gtk.menuPopupAtWidget by adding explicit cast to Gtk.Menu. This fixes build failures with newer GI bindings where the type hierarchy is not automatically recognized.

Use the gi-gtk3 and gi-gdk3 build dependencies, which have been renamed from gi-gtk and gi-gdk.