Get the $value from within a Rule getMessageParameters() method.

[mikepmtl]

It would be nice to be able to have the ability to return a validation error message that repeats the value of the field that is being validate.

i.e. For something like NumericBetween:

• The number {value} in not between {lowerBound} and {upperBound}.

Currently we can only get the parameters passed, but not the value.