New icons added, icon list cut off

Thanks for this note! I hadn’t noticed that the icon list would get cut off and will have to remedy that.

Also, I’ll take a look at the newly added icons and see which I might include. You will notice that some have been intentionally excluded, as they don’t seem to fit the type needed for this plugin (e.g. the editing set). Note, additionally, that the iconset array can be filtered before display using gt-item-icon_selection.