Updated changelog

Author: dancannon

CHANGELOG.md

@@ -2,13 +2,14 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-## Unreleased
+## v1.3.1 - 2015-01-22
 
 ### Added
  - Added more documentation and examples for `GetAll`.
 
 ### Fixed
 - Fixed `RunWrite` not defering its call to `Cursor.Close()`. This could cause issues if an error occurred when decoding the result.
+- Fixed panic when calling `Error()` on a GoRethink `rqlError`.
 
 ## v1.3.0 - 2016-01-11