fix: trackByProp can't work. (#1622)
fix: trackByProp can't work. (#1622)

trackByProp must be like guid.
swimlane/ngx-datatable,achimha/ngx-datatable,swimlane/ngx-datatable,achimha/ngx-datatable,swimlane/angular2-data-table,swimlane/angular2-data-table,swimlane/ngx-datatable,achimha/ngx-datatable,swimlane/angular2-data-table