Support tuples in filters

[marpulli]

Is your feature request related to a problem? Please describe.
I would like to add a filter to my query that uses a tuple. E.g. the generated SQL would look something like:

SELECT id FROM employees
WHERE (first_name, id) > (:first_name, :id)
ORDER BY (first_name, id)
LIMIT 10

Describe the solution you'd like
I think sqlalchemy uses the following syntax, which would work:

filter(tuple_("first_name", "id") > tuple_(first_name, id))

Describe alternatives you've considered
The query can also be written with a combination of AND/OR statements but this does not seem to make use of a multi-column index on (first_name, id) (we are using postgres), meaning it has worse performance.

Additional context