ErrKeyType is used to communicate the value requested cannot be converted/coerced/manipulated according to the method call.

Dicter is an abstraction over map[string]interface{} with the intent of allowing manipulation between the underlying data and requests for that data.

Dict is a pass-through implementation of the Dicter interface.

ErrKeyRequired is used to communicate a map miss and Dicter implementations should set the value as the missed key.