- Changed IQ stanzas to pointer semantics

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

stanza/results_sets.go

@@ -0,0 +1,29 @@
+package stanza
+
+import (
+	"encoding/xml"
+)
+
+// Support for XEP-0059
+// See https://xmpp.org/extensions/xep-0059
+const (
+	// Common but not only possible namespace for query blocks in a result set context
+	NSQuerySet = "jabber:iq:search"
+)
+
+type ResultSet struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/rsm set"`
+	After   *string  `xml:"after,omitempty"`
+	Before  *string  `xml:"before,omitempty"`
+	Count   *int     `xml:"count,omitempty"`
+	First   *First   `xml:"first,omitempty"`
+	Index   *int     `xml:"index,omitempty"`
+	Last    *string  `xml:"last,omitempty"`
+	Max     *int     `xml:"max,omitempty"`
+}
+
+type First struct {
+	XMLName xml.Name `xml:"first"`
+	Content string
+	Index   *int `xml:"index,attr,omitempty"`
+}