1) Ambiguous clause creation arguments, such as:

Model1 -> clause( id => 123,
		  cond => [ id => 456 ],
		  logic => 'OR' );

now raise error.

2) If connect-code-specifying role's method littleorm_db_connector_config() returns nothing, then no ORM::Db::Connector created for that model, can fall back on ORM::Db -> init( $dbh ) global init $dbh. See ttt/scripts/run/033_connect_w_connector_role.pl test script for example.