Add recent changes to changelog

Author: clue

CHANGELOG.md

@@ -4,6 +4,30 @@ This file is a manually maintained list of changes for each release. Feel free
 to add your changes here when sending pull requests. Also send corrections if
 you spot any mistakes.
 
+## 0.4.0 (2014-xx-xx)
+
+* BC break: Unified socket addresses (string URIs instead of host+port)
+  ([#5](https://github.com/clue/datagram/pull/5)):
+  
+  * The `Factory` now only accepts a single-argument full socket address (i.e. host:port for UDP/IP):
+
+    ```php
+// Previously:
+$factory->createServer(1337, 'localhost')->then(…);
+$factory->createClient('localhost', 1337)->then(…);
+// Now:
+$factory->createServer('localhost:1337')->then(…);
+$factory->createClient('localhost:1337')->then(…);
+```
+
+  * The methods `Socket::getAddress()` and `Socket::getPort()` have been removed.
+  * Instead, the following two methods have been introduced which both return
+    a full socket address:
+    * `SocketInterface::getLocalAddress()`
+    * `SocketInterface::getRemoteAddress()`
+* Small refactoring to ease extending base classes
+  ([#4](https://github.com/clue/datagram/pull/4))
+
 ## 0.3.0 (2013-06-23)
 
 * Feature: Add `Datagram\Socket::end()` method which closes the socket as soon
@@ -19,4 +43,3 @@ as the remaining outgoing buffer has been sent.
 ## 0.1.0 (2013-01-21)
 
 * First tagged release
-