Sugar in clause object creation. Can now write:

my $cla = Model1 -> clause( id => 123 );

or

my $cla = Model1 -> clause( id => 123,
			    id => 456 );

or

my $cla = Model1 -> clause( id => 123,
			    id => 456,
			    logic => 'OR' );

In case of the column named "logic" (or "model", or "cond", or "table_alias"), have to write old style:

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