Show registered native allocations in ahat.

Bug: 23130675
Change-Id: I1d7f41a47a956b30611429b9bd395ec5f9580209
diff --git a/tools/ahat/README.txt b/tools/ahat/README.txt
index a3ecf86..da5225c 100644
--- a/tools/ahat/README.txt
+++ b/tools/ahat/README.txt
@@ -77,6 +77,9 @@
  * Instance.isRoot and Instance.getRootTypes.
 
 Release History:
+ 0.4 Pending
+   Show registered native allocations for heap dumps that support it.
+
  0.3 Dec 15, 2015
    Fix page loading performance by showing a limited number of entries by default.
    Fix mismatch between overview and "roots" totals.