message: allow validator to detach field instances
diff: @@ -490,7 +490,7 @@ export default class Validator {
  * @param {String} scope The name of the field scope.
  */
  detach (name, scope) {
  - const field = this._resolveField(name, scope);
  + let field = name instanceof Field ? name : this._resolveField(name, scope);
  if (field) {
  field.destroy();
  this.fields.remove(field);
  