we've got 2 multi-value attribute columns and I'd like to be able to compose a query with
a filter part like this:
filter=columnA,1,2,3 OR !filter=columnB,99
From reading the forum and the docs it looks like the top level elements of the query
string are implicitly AND'd together ( query, filters, etc ).
Is there any way to, or any plans to allow this type of filter composition?