Update ahat version number to 1.3.

Test: m ahat-test
Test: open heap dump and verify version number on overview page
Change-Id: I46837904532c89ee4007f8f3dff5bc054fc87b1a
diff --git a/tools/ahat/README.txt b/tools/ahat/README.txt
index 38556ab..4471c0a 100644
--- a/tools/ahat/README.txt
+++ b/tools/ahat/README.txt
@@ -75,7 +75,11 @@
  * Instance.isRoot and Instance.getRootTypes.
 
 Release History:
- 1.3 Pending
+ 1.4 Pending
+
+ 1.3 July 25, 2017
+   Improve diffing of static and instance fields.
+   Improve startup performance by roughly 25%.
 
  1.2 May 26, 2017
    Show registered native sizes of objects.
diff --git a/tools/ahat/src/manifest.txt b/tools/ahat/src/manifest.txt
index c35ccf1..d893c5e 100644
--- a/tools/ahat/src/manifest.txt
+++ b/tools/ahat/src/manifest.txt
@@ -1,4 +1,4 @@
 Name: ahat/
 Implementation-Title: ahat
-Implementation-Version: 1.2
+Implementation-Version: 1.3
 Main-Class: com.android.ahat.Main