Add a note about the $extrafiles fixes.

RELEASE-0.4.0

@@ -1,10 +1,10 @@
 New feature release:
 
 * Add --scanoptions to the make command [cellog]
-    This allows configuring several things when generating package.xml.
+    This allows configuring several things when generating `package.xml`.
     This option should specify the location of a php script that specifies 3
     overrides to the default values for baseinstalldirs, for directory->role
-    mapping, and for pathnames in package.xml
+    mapping, and for pathnames in `package.xml`
 
     For example:
         <?php
@@ -22,11 +22,12 @@ New feature release:
     as the package.xml
 * Update source layout so files can be autoloaded from checkout [saltybeagle]
 * Add code coverage reporter to the www directory [saltybeagle]
+* For `$extrafiles`, support any object that implements `PackageInterface` [saltybeagle]
 
 Bugs fixed:
 
 * Increase minimum PHP dependency to 5.3.1RC1 [saltybeagle]
-* Prevent fatal errors when only a package2.xml is present, ala XML_RPC2 [clockwerx]
+* Prevent fatal errors when only a `package2.xml` is present, ala XML_RPC2 [clockwerx]
 * Allow src/PEAR2 base directory for package layout [saltybeagle]
-* Fix Bug #18123 Exception when using pyrus.phar make -n. [saltybeagle]
+* Fix Bug #18123 Exception when using `pyrus.phar make -n`. [saltybeagle]
 * Correct inconsitency of docs directory name. [saltybeagle]