Updated bug with looser Background.php 0 check int and string
Updated bug with looser Background.php 0 check int and string

WIP -
    test rest for ASC, ORDERBY... custom callback logic
    Use self::column consts rather than string names in rest
    Document rest.

RichardTMiles/CarbonPHP,RichardTMiles/CarbonPHP,RichardTMiles/CarbonPHP,RichardTMiles/CarbonPHP,RichardTMiles/CarbonPHP