Anyway to allow multiple query parameters with same key ?

[RoXuS]

Description

Many backend frameworks allow multiple query parameters with the same key. For example ?sort=a,desc&sort=b,desc

Expected outcome

queryObject shoud be like this : { sort: ['a,desc', 'b,desc'] }

Actual outcome

Only one key is handled : { sort: 'a,desc' }

Proposition

I propose the following PR : #80.
Is that acceptable?