- Changed IQ stanzas to pointer semantics

- Fixed commands from v 0.4.0 and tests
- Added primitive Result Sets support (XEP-0059)

stanza/sasl_auth.go

@@ -69,12 +69,18 @@ type Bind struct {
 	XMLName  xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-bind bind"`
 	Resource string   `xml:"resource,omitempty"`
 	Jid      string   `xml:"jid,omitempty"`
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
 }
 
 func (b *Bind) Namespace() string {
 	return b.XMLName.Space
 }
 
+func (b *Bind) GetSet() *ResultSet {
+	return b.ResultSet
+}
+
 // ============================================================================
 // Session (Obsolete)
 
@@ -89,12 +95,18 @@ func (b *Bind) Namespace() string {
 type StreamSession struct {
 	XMLName  xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-session session"`
 	Optional bool     // If element does exist, it mean we are not required to open session
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
 }
 
 func (s *StreamSession) Namespace() string {
 	return s.XMLName.Space
 }
 
+func (s *StreamSession) GetSet() *ResultSet {
+	return s.ResultSet
+}
+
 func (s *StreamSession) IsOptional() bool {
 	if s.XMLName.Local == "session" {
 		return s.Optional