TODO item on triggers

Is this item completed?  It sure looks like it:
* Make triggers refer to columns by number, not name

test=> \d pg_trigger     Table "pg_catalog.pg_trigger"    Column     |    Type    | Modifiers 
----------------+------------+-----------tgrelid        | oid        | not nulltgname         | name       | not
nulltgfoid        | oid        | not nulltgtype         | smallint   | not nulltgenabled      | boolean    | not
nulltgisconstraint| boolean    | not nulltgconstrname   | name       | not nulltgconstrrelid  | oid        | not
nulltgdeferrable  | boolean    | not nulltginitdeferred | boolean    | not nulltgnargs        | smallint   | not
nulltgattr        | int2vector | not nulltgargs         | bytea      | 
 

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