2.4.7: * TreeModelFitler: - Really fix the constructor. - Warn when calling set_value() on the filter mdoel instead of the child model. - set_modify_func(): Make this work - don't ignore the value. * TreeView: add_column_editable() operates on the child model if the model is a TreeModelFiler. * Documentation: - Updated popup menu section and example, to use UIManager. - Added 2 TreeModelFilter examples. (Murray Cumming)