Fixed propType check used in ColMixin
Fixed propType check used in ColMixin

rogerso/newforms-bootstrap,insin/newforms-bootstrap,dworznik/newforms-bootstrap,dworznik/newforms-bootstrap,insin/newforms-bootstrap,mischkew/newforms-bootstrap,prathamesh-sonpatki/newforms-bootstrap,HireAnEsquire/newforms-bootstrap,HireAnEsquire/newforms-bootstrap,prathamesh-sonpatki/newforms-bootstrap,mischkew/newforms-bootstrap,rogerso/newforms-bootstrap