Refactor setDatetime function :  - add setUpdatedAtAndCreatedAt function  - check use lodash _.has to check if createdAt or/and updatedAt are setted in ($set, $setOnInsert, $unset, $currentDate)
Refactor setDatetime function :
 - add setUpdatedAtAndCreatedAt function
 - check use lodash _.has to check if createdAt or/and updatedAt are setted in ($set, $setOnInsert, $unset, $currentDate)

dial-once/node-mongoat