Log Message:
xfce4-taskmanager: update to 1.5.2

Change log:

1.5.2
======
- Fix restoring the window size (Fixes #39)
- Improve wording of systray option (Fixes #19)
- Translation Updates:
  Italian

1.5.1
======
- Fix erroneous binding of settings (Fixes #37)
- Store column positions again
- Store sort-column-id and sort-type (Fixes #36)
- Also include swap in the memory graph
- Reduce drawing code
- Reduce borders of graphs
- Replace GtkImageMenuItem with GtkMenuItem

1.5.0
======
Please note that this is a development release
- Port to xfconf
- Move to Client-side decorations
- Migrate all settings to the settings dialog
- settings: Switch to XfceTitledDialog
- Use infobar for root warning box
- Drop exec button from toolbar
- include stdlib.h because exit() is used
- remove GLIB_CHECK_VERSION checks
- statusbar: Use better color that works well with both light and dark
themes (!17)
- Fix handling "show-legend" setting
- Handle Esc key correctly with hidden filter
- Drop unused var and sort copyright
- Show/hide filterbar with Ctrl+f and clear with Esc
- Properly close settings dialog
- Remove GSourceFunc casts
- Fix compilation warnings
- Replace AC_PROG_LIBTOOL with IT_PROG_INTLTOOL
- Simplify "query-tooltip" signal handler
- Ellipsize memory and swap labels (Fixes #32)
- Set window icon in glade file
- Replace filter entry with GtkSearchBar
- Fix doc links and bump dates
- Simplify settings dialog code
- Drop leftover function for toolbar style
- Move about dialog to settings
- Drop toolbar style setting
- Fix typo
- Fix tooltip markdown issue
- Create notification area icon only if needed (Bug #25)
- Translation Updates:
  Basque, Belarusian, Chinese (China), Chinese (Taiwan), Czech, French,
  Galician, Italian, Japanese, Lithuanian, Norwegian Bokmål,
  Portuguese (Brazil), Serbian, Turkish