Change URI to IRI after finding validation pattern

person.go

@@ -10,7 +10,7 @@ import (
 type Person struct {
 	*CommonAttributes
 	Name       string              `xml:"name"`
-	URI        URI                 `xml:"uri,omitempty"`
+	URI        IRI                 `xml:"uri,omitempty"`
 	Email      EmailAddress        `xml:"email,omitempty"`
 	Extensions []*ExtensionElement `xml:",any,omitempty"`
 }
@@ -29,7 +29,7 @@ func (p *Person) Check() error {
 	}
 
 	if p.URI != "" {
-		if !isValidURI(p.URI) {
+		if !isValidIRI(p.URI) {
 			return fmt.Errorf("uri element of person %v not correctly formatted", p.Name)
 		}
 	}