Added Chat#isUnread() for future use in message notifications

src/main/java/envoy/client/Chat.java

@@ -59,6 +59,13 @@ public class Chat implements Serializable {
 			}
 	}
 
+	/**
+	 * @return {@code true} if the newest message received in the chat doesn't have
+	 *         the status {@code READ}
+	 * @since Envoy v0.3-alpha
+	 */
+	public boolean isUnread() { return !model.isEmpty() && model.get(model.size() - 1).getStatus() != MessageStatus.READ; }
+
 	/**
 	 * @return all messages in the current chat
 	 * @since Envoy v0.1-alpha

src/main/java/envoy/client/ui/list/ComponentListModel.java

@@ -78,6 +78,12 @@ public final class ComponentListModel<E> implements Iterable<E>, Serializable {
 	 */
 	public int size() { return elements.size(); }
 
+	/**
+	 * @return {@code true} if this model contains no elements
+	 * @see java.util.List#isEmpty()
+	 */
+	public boolean isEmpty() { return elements.isEmpty(); }
+
 	/**
 	 * @return an iterator over the elements of this list model
 	 * @see java.util.List#iterator()