Support for Array Operators

It would be nice to have array operator support [as outlined here](https://github.com/radiantearth/stac-api-spec/tree/master/fragments/filter).
_Array Operators: (http://www.opengis.net/spec/cql2/1.0/conf/array-operators) defines array operators (A_EQUALS, A_CONTAINS, A_CONTAINED_BY, and A_OVERLAPS)_

We are specifically hoping to support an intersection check equivalent to something like:
`SQL SELECT * FROM some_table t WHERE someClientArray && t.db_array // check to see if there's at least one value in common`