Added takesnapshot() call for:

- split of the instances,
- renaming of the Object/Volume item
- changing of the additional settings.

src/slic3r/GUI/GUI_ObjectSettings.cpp

@@ -93,6 +93,7 @@ bool ObjectSettings::update_settings_list()
             btn->SetToolTip(_(L("Remove parameter")));
 
 			btn->Bind(wxEVT_BUTTON, [opt_key, config, this](wxEvent &event) {
+                wxGetApp().plater()->take_snapshot(wxString::Format(_(L("Delete Option %s")), opt_key));
 				config->erase(opt_key);
                 wxGetApp().obj_list()->changed_object();
                 wxTheApp->CallAfter([this]() {
@@ -137,6 +138,13 @@ bool ObjectSettings::update_settings_list()
                 if (is_extruders_cat)
                     option.opt.max = wxGetApp().extruders_edited_cnt();
                 optgroup->append_single_option_line(option);
+
+                optgroup->get_field(opt)->m_on_change = [optgroup](const std::string& opt_id, const boost::any& value) {
+                    // first of all take a snapshot and then change value in configuration
+                    wxGetApp().plater()->take_snapshot(wxString::Format(_(L("Change Option %s")), opt_id));
+                    optgroup->on_change_OG(opt_id, value);
+                };
+
             }
             optgroup->reload_config();