Changes - `BaseAPIQuery.submit_query` now includes optional `headers` argument to send with request
2.3.0
Adds - Adds new filters to `__all__` declaration - Adds new classes, `APIMeanQueryParams` and `APIMedianQueryParams`, which require the values necessary for the related queries - Adds new tests for the new query types
2.2.0
Adds - Adds new filters for "not in" and "not equal"
2.1.2
Adds - Adds optional `median_variable_name` parameter to `APIQueryParams` to allow for median queries
2.1.1
Adds - Adds optional `order` parameter to `APIQueryParams` to allow for sorting results
2.1.0
Changes - Changes the `InFilter` so it will raise an error if it receives an empty list or `None` as the `val`.