1.18.5:

* Details: Avoid an outdent after group titles
* List View: Correct the default column widths.
* Examples: Remove all column_width attributes now that defaults are good.
* Related records:
  - Allow navigation via read-only relationships.
  - Fix bug with a blank row when there is only one row. 
* Find: Get criteria even when a field is on the layout twice.
* ID chooser dialog: Work around a crash in GTK+. (Bug #660347)
* Deleting tables: Remove auto-increment rows too.
  Bug #661653 (Ben Konrath)
* Build: Fix the build with the latest unstable glibmm.
* libglom:
  Added Glom::LayoutItem_Portal::get_suitable_table_to_view_details().
  Added Glom::DbUtils::layout_field_should_have_navigation()