Log Message:
Update to 1.20.0:

Full changelog:

Add screenshot support for HiDPI displays
mate-screenshot: added New button
screenshot-save.c: Fix build warnings with pipe write and read:
add style class logview-window
Translations update
WidthOfScreen and HeightOfScreen implementation
baobab: make zoom with mousewheel work on chart
screenshot: remove some unused code
screenshot: don’t get window title as it’s not used later
baobab/logview/dictionary: add our copyright to About dialog
baobab: set transient parent for remote connect dialog
baobab: don’t make prefs dialog visible in .ui file
baobab: set parent window for About dialog
avoid deprecated gdk_screen_get_active_window
gtk 3.22: avoid deprecated gdk_screen_get_monitor functions:
avoid deprecated gdk_screen_width/height
avoid deprecated gdk_screen_get_width/height
screenshot: avoid deprecated GdkDevice objects
dictionary: avoid deprecated GdkDevice objects
avoid deprecated gdk_screen_get_n_monitors
avoid deprecated gdk_screen_make_display_name
gdict-applet: don’t use deprecated gtk_show_uri
don’t use deprecated gtk_show_uri
avoid deprecated gdk_screen_get_number
searchtool & logview: avoid deprecated GtkAlignment
mate-screenshot: fix showing busy cursor when saving area screenshot
screenshot: don’t translate the timestamp in the filename
mate-dictionary: include correct header to fix occasional FTBFS
Translations update