This update for xfce4-panel, xfce4-pulseaudio-plugin, xfce4-taskmanager, xfce4-terminal, xfce4-whiskermenu-plugin fixes the following issues:

xfce4-panel:

- Update to version 4.18.5

  * pager: Do not adapt upper value of spin button in viewport mode
  * pager: Update workspace layout also on window manager change
  * pager: Fix aspect ratio for viewport (V2)
  * actions: Fix memory leak
  * pager: Delay GdkScreen signal handlers
  * panel: Do not scale background image when UI scale > 1
  * popup-command: Do not block autohide when popped up at pointer
  * Fix memory leaks when using gtk_css_provider_new()
  * panel: Clear item list before repopulating item dialog
  * panel: Remove autosave timer for plugins
  * wrapper: Really ensure we don't call gtk_main_quit() twice
  * panel: Block autohide when the panel has input focus
  * clock: Fix sync timeout for seconds display
  * clock: Implement ConsoleKit sleep monitor
  * Add/Sharpen icons at 48-128px
  * Adjust 32px icon margins, new separator icon
  * Sharpen icons at 16px and 32px
  * Increase margins for 24px icons
  * Make 24px icons sharper
  * icons: Fix wrong exported sizes
  * Translation Updates

xfce4-pulseaudio-plugin:

- Update to version 0.4.8

  * MPRIS: Use D-Bus name for identifying players
  * Fix possible context menu crash with MPRIS playlist
  * Add option to make mic icon persistent
  * Check for mic widget visibility
  * Preserve channel balance when changing sink/source volume
  * MPRIS: Add option to send multimedia keys to all players
  * MPRIS: Fix default controlled player by multimedia keys
  * Remove dead code
  * Translation Updates

xfce4-taskmanager:

- Update to version 1.5.6

  * Update copyright year
  * Rounded legend icons
  * Reopen process window maximized when closed maximized
  * Properly finalize global objects in main
  * Add missing include
  * Fix more memory leaks
  * Fix memory leak
  * Fix CSS related deprecation warnings
  * Ignore GtkStatusIcon related deprecations
  * Make libx11 optional, guard x11 code paths
  * Change type so that memory values are correct (Fixes #65)
  * settings-dialog: Fix untranslated label
  * Add icons at missing sizes, clean up SVG metadata
  * Add minimal support for Wayland
  * Fix graph drop off on the right side
  * Change graph peak variable to double
  * Remove timeout before exiting main loop
  * build: Add GLib requirement
  * Do not treat missing swap as error on OpenBSD and NetBSD
  * Fix process filter crash caused by the use of an uninitialized
    variable
  * Translation Updates

xfce4-terminal:

- Update to version 1.1.0

  * Update copyright year
  * Allow passing arguments to custom commands
  * Fully translate strings in unsafe paste dialog
  * window: Properly sync always-show-tabs
  * cleanup: Include gdkx.h in one place
  * preferences: Remove unused class member
  * preferences: Check if channel itself exists instead of check
    property
  * screen: Review image loader memory management
  * image-loader: Review cache management
  * Add keywords to .desktop files (Fixes #50)
  * screen: Take window scaling into account when drawing
    (Fixes #71)
  * Remove obsolete GNOME default-app file (Fixes #109)
  * Add "Open File Manager Here" action (Fixes #133)
  * Properly manage default encoding (Fixes #128)
  * Move general include in private.h
  * dropdown: Disable systray icon on Wayland
  * Fix startup with GDK_BACKEND=x11 (Fixes #177)
  * shortcuts: Restore broken action toggle-menubar
  * shortcuts: Fix non-consumed key event for show-menubar
  * main: Allow GTK to parse its options first (Fixes #216)
  * search: Add missing sanity check
  * Use GLib logging functions and do not translate warnings
  * Remove obsolete CHECK_VERSION()
  * Use g_new() instead of malloc()
  * Fix Xfconf memory management
  * search-dialog: Fix memory leak
  * Remove extra separator at the end of context menu
  * Missing shortcut keys in the standalone preferences dialog
    (Issue #198)
  * Apply 1 suggestion(s) to 1 file(s)
  * Enable kinetic scrolling in VteTerminal
  * Extend --disable-server description wrt. process model
  * Drop obsolete --disable-server translations
  * prefs-dialog: Fix untranslated strings
  * Add sixel support
  * Add icons at missing sizes, clean up SVG metadata
  * build: Fix autoconf warnings
  * build: Add GLib requirement
  * Add accel entries for scrolling pages (Issue #221)
  * Remove documentation for dead anti-aliasing option
  * Make strings translatable (Issue #222)
  * Fix shortcuts-editor include
  * Support hyperlinks (Issue #21)
  * Fix argument type for xfce_shortcuts_editor_new
  * fix background_notify
  * Remove disable-help preference.
  * MR: !51 transitioned to Xfconf (#134)
  * typos in MR !48 fixed
  * Remove all references to terminal-preferences.glade
  * Remove one more mention of terminal-preferences.glade
  * Remove trailing slash
  * Remove terminal-preferences-ui.h from makefile
  * Remove terminal-preferences.glade
  * MR: !48 shortcuts editor embedded into preferences-dialog (#195)
  * MR: !48 preferences-dialog rewritten in C (#195)
  * MR: !46 Change in implementation for TAB accels (#150)
  * Implementation of MiscShiftArrowsToScroll as accelerators.
  * Add PCRE2 build dependency
  * Remove libxfce4ui 4.17 version guards
  * Replace with xfce_gtk_menu_append_separator
  * Tweak toolbar
  * Translation Updates
- "gnome-control-center" support is no longer available; remove the
  corresponding entries from the %files list

xfce4-whiskermenu-plugin:

- Update to version 2.8.0

  * Fix menu toggling in Wayland.
  * Fix menu position in Wayland.
  * Add support for popping up specific menu instances. (Issue #95)
  * Add showing menu at center of screen. (Issue #109)
  * Replace options for positioning menu layout.
  * Replace resize widgets with options in settings dialog.
  * Replace command for switching users.
  * Replace popup script with executable.
  * Require Xfce 4.14.
  * Make linking against AccountsService explicit.
  * Stop including favorites in recent by default.
  * Store settings in Xfconf.
  * Translation updates