Update CHANGELOG.md for 1.3.0 release.

Signed-off-by: Philip Tricca <philip.b.tricca@intel.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8178269..9da32c4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 
-## Unreleased
+## [1.3.0] - 2017-12-07
 ### Added
 - Implementation of the EncryptDecrypt2 command.
 - Coding standard documentation.
@@ -14,6 +14,8 @@
 - Drop cast from TPM_ALG_XXX definitions
 - Use mock functions with built-in cast to avoid compiler warnings from
 manual cast.
+- Free memory correctly on error condition return paths in InitSysContext
+& SockServer.
 
 ## [1.2.0] - 2017-08-25
 ### Added