NB this release has added Inkscape as a tool dependency. (Upstream has
also now excluded a file that was causing itstool failures.)
### mate-utils 1.22.1
tx: sync with transifex
Fix -Werror=cast-function-type with GCC 8
mate-disk-usage-analyzer: Memory leak
GEN png icons from svg files
Update documenters in about dialog
mate-dictionary: Use g_strjoin to build license text
Use program-name and title in gtk_show_about_dialog call
help: update copyright
fdc64f665f