any plans to let users pass their own error message?

[cyberhck]

Currently the error message that you're returning is basically tabbed, new lined and with some special characters.

It'd be nice for us to use our own messages, it'd help with translation and customization.

The API I feel like would help is something like this:

validator := vjson.NewSchema(
    vjson.String("name").Required("{field} is required").MinLength(2, "{field} should be at least {value} characters").MaxLength(3, "{field} should be less than {value} characters"),
    vjson.String("email").Required("{field} is required").Email("{field} must be a valid email"),
    vjson.Integer("subscriptionMonths").Required("{field} is required").Min(0, "{field} can't be negative"),
    vjson.String("plan").Required().Choices([]string{"GOLD", "SILVER"}, "{field} can only be either `GOLD` or `SILVER`"),
)

When I retrieve an error, we could just get a []ValidationError, I can either use the message provided by you, or I could use my own logic.