Query operators for Simple Object columns

[campopianoa]

@stefano.menci and @meredydd There is a FR here that requests testing for exact matches of simple objects:

Query to test for equality of simple objects

As referenced here, I would find it useful to be able to test for the strict equality of simple objects within a DataTables query. Currently, when you query a simple object column, it matches on subsets. For example: # a simple object in a DataTable {"foo":[1,2,3]} This query will match the above simple object: app_tables.my_table.get(simple_obj={"foo":[1,2]}) This query will not: app_tables.my_table.get(simple_obj={"foo":[1,2,3,4]}) If you have two similar simple objects in your DataTabl…