Log Message:
xfce4-whiskermenu-plugin: update to 2.4.2

Change log:

2.4.2
=====
- Fix crash when selecting desktop action. (bug #16445)
- Translation updates: Chinese (China), Croatian, Georgian.

2.4.1
=====
- Fix narrow iconview columns.
- Fix bad hyphenation by increasing iconview column width.
- Translation updates: Finnish, Serbian.

2.4.0
=====
- Add option to show as icons. (bug #15675)
- Add hiding menu items. (bug #14816)
- Add searching keywords of menu items. (bug #15047)
- Add tooltip to profile picture for editing profile. (bug #15501)
- Adjust wording of switch user command. (bug #15398)
- Add icons to context menu.
- New default layout.
- Make panel button square only if single row and title hidden.
- Rearrange settings dialog.
- Redesign session confirmation dialogs.
- Refactor code.
- Rewrite menu load to match GarconGtkMenu.
- Switch categories with keyboard focus if hover enabled.
- Use custom icon renderer.
- Use link time optimization if available.
- Increase C++ version.
- Translation updates: Bulgarian, Catalan, Chinese (Taiwan), Czech,
  Danish, Dutch, Finnish, French, Galician, Georgian, German, Greek,
  Icelandic, Indonesian, Interlingue, Italian, Japanese, Lithuanian,
  Malay, Nepali, Norwegian Bokmål, Polish, Portuguese,
  Portuguese (Brazil), Slovak, Spanish, Turkish.