Improved _get_property() to call function steps as well as property steps.  remove_merged_elements() uses explicit merged number. Starting to fix _base::child_finished().
Improved _get_property() to call function steps as well as property steps.  remove_merged_elements() uses explicit merged number. Starting to fix _base::child_finished().

cjungmann/schemafw,cjungmann/schemafw,cjungmann/schemafw,cjungmann/schemafw,cjungmann/schemafw