Generate time.Time from string/date-time

[cbndr]

Would it be possible to generate a Go time.Time type from schema string/date-time? Example:

    "start_date": {
      "description": "The actual start date",
      "type": "string",
      "format": "date-time"
    }

currently creates

StartDate string `json:"start_date"`

but in our case we would prefer

StartDate time.Time `json:"start_date"`

[michel-laterman]

@a-h, i've created a pr for elastic's fork that should be good enough for our needs. Would you like to take an early look before I open the upstream pr?