- some refactoring: moved ::xo::db::CrClass->require_folder to ::xo::Package->require_root_folder and simplified it significantly - new method :xo::db::CrFolder ad_proc register_content_types - ::xo::db::CrFolder ad_instproc save_new registers content types, if allowed_content_types are specified - ::xo::db::CrFolder instproc delete: don't call UI-stuff from the library - bump version number to let other packages depend on it