Upgrade to minidom 0.4.4 to avoid having to redefine IntoElements for each Into<Element>.

src/pubsub/event.rs

@@ -7,7 +7,7 @@
 use try_from::TryFrom;
 use std::str::FromStr;
 
-use minidom::{Element, IntoElements, IntoAttributeValue, ElementEmitter};
+use minidom::{Element, IntoAttributeValue};
 use jid::Jid;
 use chrono::{DateTime, FixedOffset};
 
@@ -37,12 +37,6 @@ impl From<Item> for Element {
     }
 }
 
-impl IntoElements for Item {
-    fn into_elements(self, emitter: &mut ElementEmitter) {
-        emitter.append_child(self.into());
-    }
-}
-
 generate_attribute!(Subscription, "subscription", {
     None => "none",
     Pending => "pending",