Dan LaRocque drivers all time

3d295decad98285992c5680c6a3914fbf02a64ee | Author: Dan LaRocque <dalaro@hopcount.org>
 | 2020-03-05 18:46:50-06:00

    Add V4+ features: `DATE_TYPE` and `SMALLINT_AND_TINYINT_TYPES`
    
    This commit adds two DefaultProtocolFeature enum elements, supported
    from V4 onward:
    
    * SMALLINT_AND_TINYINT_TYPES
    
    * DATE_TYPE