Request for aggregation functions .sum(), .min() etc. to have a consistent interface with .select()

[kitsunde]

Environment

Knex version: 2.3.0

Feature discussion / request

One dictionary arg (consistent):

knex.sum({ a: 'foo', b: 'bar' })

select sum("foo") as "a", sum("bar") as "b"

knex.select({ a: 'foo', b: 'bar' })

select "foo" as "a", "bar" as "b"

Multiple args (inconsistent):

knex.select({ a: 'foo' }, { b: 'bar' });

select "foo" as "a", "bar" as "b"

knex.sum({ a: 'foo' }, { b: 'bar' });

select sum("foo") as "a"